diff --git a/scripts/modules/bpy_hydra.py b/scripts/modules/bpy_hydra.py
index 07eaa455912e..3923a78d6bcc 100644
--- a/scripts/modules/bpy_hydra.py
+++ b/scripts/modules/bpy_hydra.py
@@ -109,7 +109,7 @@ def export_mtlx(material):
         if not doc:
             return ""
 
-        mtlx_file = mx_utils.get_temp_file(".mtlx", material.name)
+        mtlx_file = mx_utils.get_temp_file(".mtlx", f"mat_{material.as_pointer():016x}")
         mx_utils.export_to_file(doc, mtlx_file, export_deps=True, copy_deps=False)
         return str(mtlx_file)
 
diff --git a/source/blender/render/hydra/engine.cc b/source/blender/render/hydra/engine.cc
index 26026dad49ea..fdcbf0903785 100644
--- a/source/blender/render/hydra/engine.cc
+++ b/source/blender/render/hydra/engine.cc
@@ -8,11 +8,14 @@
 #include <pxr/imaging/hgi/tokens.h>
 #include <pxr/usd/usdGeom/tokens.h>
 
+#include "BLI_path_util.h"
+#include "GPU_context.h"
+
 #include "engine.h"
 
 namespace blender::render::hydra {
 
-CLG_LOGREF_DECLARE_GLOBAL(LOG_EN, "rhd.en");
+CLG_LOGREF_DECLARE_GLOBAL(LOG_RENDER_HYDRA, "render.hydra");
 
 Engine::Engine(RenderEngine *bl_engine, const std::string &delegate_id) : bl_engine_(bl_engine)
 {
@@ -21,6 +24,12 @@ Engine::Engine(RenderEngine *bl_engine, const std::string &delegate_id) : bl_eng
   pxr::TF_PY_ALLOW_THREADS_IN_SCOPE();
   render_delegate_ = registry.CreateRenderDelegate(pxr::TfToken(delegate_id));
 
+  /* Current USD (23.02) has limited support for Vulkan. To make it works USD should be built
+   * with PXR_ENABLE_VULKAN_SUPPORT=TRUE which is not possible now */
+  if (GPU_backend_get_type() == GPU_BACKEND_VULKAN) {
+    BLI_setenv("HGI_ENABLE_VULKAN", "1");
+  }
+
   pxr::HdDriverVector hd_drivers;
   if (bl_engine->type->flag & RE_USE_GPU_CONTEXT) {
     hgi_ = pxr::Hgi::CreatePlatformDefaultHgi();
diff --git a/source/blender/render/hydra/engine.h b/source/blender/render/hydra/engine.h
index 2f129a6fb4e8..2bd760c1537d 100644
--- a/source/blender/render/hydra/engine.h
+++ b/source/blender/render/hydra/engine.h
@@ -21,7 +21,7 @@
 
 namespace blender::render::hydra {
 
-extern struct CLG_LogRef *LOG_EN; /* EN - Engine */
+extern struct CLG_LogRef *LOG_RENDER_HYDRA; /* EN - Engine */
 
 class Engine {
  public:
diff --git a/source/blender/render/hydra/final_engine.cc b/source/blender/render/hydra/final_engine.cc
index f2b8286fc04c..768934b9ffca 100644
--- a/source/blender/render/hydra/final_engine.cc
+++ b/source/blender/render/hydra/final_engine.cc
@@ -2,13 +2,14 @@
  * Copyright 2011-2022 Blender Foundation */
 
 #include "BKE_lib_id.h"
+#include "BLI_timecode.h"
 #include "DEG_depsgraph_query.h"
 #include "GPU_framebuffer.h"
 #include "GPU_texture.h"
+#include "PIL_time.h"
 
 #include "camera.h"
 #include "final_engine.h"
-#include "utils.h"
 
 namespace blender::render::hydra {
 
@@ -63,12 +64,6 @@ void FinalEngine::render(Depsgraph *depsgraph)
   }
   tasks.push_back(render_task_delegate_->get_task());
 
-  std::chrono::time_point<std::chrono::steady_clock> time_begin = std::chrono::steady_clock::now(),
-                                                     time_current;
-  std::chrono::milliseconds elapsed_time;
-
-  float percent_done = 0.0;
-
   std::map<std::string, std::vector<float>> render_images{
       {"Combined", std::vector<float>(res[0] * res[1] * 4)}}; /* 4 - number of channels. */
   std::vector<float> &pixels = render_images["Combined"];
@@ -79,19 +74,23 @@ void FinalEngine::render(Depsgraph *depsgraph)
     engine_->Execute(render_index_.get(), &tasks);
   }
 
+  char elapsed_time[32];
+  double time_begin = PIL_check_seconds_timer();
+  float percent_done = 0.0;
+
   while (true) {
     if (RE_engine_test_break(bl_engine_)) {
       break;
     }
 
     percent_done = renderer_percent_done();
-    time_current = std::chrono::steady_clock::now();
-    elapsed_time = std::chrono::duration_cast<std::chrono::milliseconds>(time_current -
-                                                                         time_begin);
+
+    BLI_timecode_string_from_time_simple(
+        elapsed_time, sizeof(elapsed_time), PIL_check_seconds_timer() - time_begin);
 
     notify_status(percent_done / 100.0,
                   scene_name + ": " + layer_name,
-                  "Render Time: " + format_duration(elapsed_time) +
+                  std::string("Render Time: ") + elapsed_time +
                       " | Done: " + std::to_string(int(percent_done)) + "%");
 
     if (render_task_delegate_->is_converged()) {
@@ -185,12 +184,6 @@ void FinalEngineGL::render(Depsgraph *depsgraph)
   }
   tasks.push_back(render_task_delegate_->get_task());
 
-  std::chrono::time_point<std::chrono::steady_clock> time_begin = std::chrono::steady_clock::now(),
-                                                     time_current;
-  std::chrono::milliseconds elapsed_time;
-
-  float percent_done = 0.0;
-
   std::map<std::string, std::vector<float>> render_images{
       {"Combined", std::vector<float>(res[0] * res[1] * 4)}}; /* 4 - number of channels. */
   std::vector<float> &pixels = render_images["Combined"];
@@ -217,19 +210,23 @@ void FinalEngineGL::render(Depsgraph *depsgraph)
     engine_->Execute(render_index_.get(), &tasks);
   }
 
+  char elapsed_time[32];
+  double time_begin = PIL_check_seconds_timer();
+  float percent_done = 0.0;
+
   while (true) {
     if (RE_engine_test_break(bl_engine_)) {
       break;
     }
 
     percent_done = renderer_percent_done();
-    time_current = std::chrono::steady_clock::now();
-    elapsed_time = std::chrono::duration_cast<std::chrono::milliseconds>(time_current -
-                                                                         time_begin);
+
+    BLI_timecode_string_from_time_simple(
+        elapsed_time, sizeof(elapsed_time), PIL_check_seconds_timer() - time_begin);
 
     notify_status(percent_done / 100.0,
                   scene_name + ": " + layer_name,
-                  "Render Time: " + format_duration(elapsed_time) +
+                  std::string("Render Time: ") + elapsed_time +
                       " | Done: " + std::to_string(int(percent_done)) + "%");
 
     if (render_task_delegate_->is_converged()) {
diff --git a/source/blender/render/hydra/final_engine.h b/source/blender/render/hydra/final_engine.h
index 17473ad5ec74..388500a38710 100644
--- a/source/blender/render/hydra/final_engine.h
+++ b/source/blender/render/hydra/final_engine.h
@@ -3,8 +3,6 @@
 
 #pragma once
 
-#include <chrono>
-
 #include "engine.h"
 
 namespace blender::render::hydra {
diff --git a/source/blender/render/hydra/preview_engine.cc b/source/blender/render/hydra/preview_engine.cc
index 08b1f5b90c7d..4992c67f9636 100644
--- a/source/blender/render/hydra/preview_engine.cc
+++ b/source/blender/render/hydra/preview_engine.cc
@@ -109,7 +109,7 @@ double PreviewEngine::free_instance(uintptr_t uuid, void *user_data)
     return LIFETIME;
   }
 
-  CLOG_INFO(LOG_EN, 2, "");
+  CLOG_INFO(LOG_RENDER_HYDRA, 2, "");
   instance_ = nullptr;
   return -1;
 }
diff --git a/source/blender/render/hydra/python.cc b/source/blender/render/hydra/python.cc
index e445ead763a2..c4d10e8b24c3 100644
--- a/source/blender/render/hydra/python.cc
+++ b/source/blender/render/hydra/python.cc
@@ -22,7 +22,7 @@ namespace blender::render::hydra {
 
 static PyObject *init_func(PyObject * /*self*/, PyObject *args)
 {
-  CLOG_INFO(LOG_EN, 1, "Init");
+  CLOG_INFO(LOG_RENDER_HYDRA, 1, "Init");
 
   pxr::PlugRegistry::GetInstance().RegisterPlugins(std::string(BKE_appdir_program_dir()) +
                                                    "/blender.shared/usd");
@@ -59,7 +59,7 @@ static PyObject *register_plugins_func(PyObject * /*self*/, PyObject *args)
     ss << s << ", ";
   }
   ss << "]";
-  CLOG_INFO(LOG_EN, 1, "Register %s", ss.str().c_str());
+  CLOG_INFO(LOG_RENDER_HYDRA, 1, "Register %s", ss.str().c_str());
 
   Py_RETURN_NONE;
 }
@@ -125,7 +125,7 @@ static PyObject *engine_create_func(PyObject * /*self*/, PyObject *args)
     }
   }
 
-  CLOG_INFO(LOG_EN, 2, "Engine %016llx %s", engine, engine_type);
+  CLOG_INFO(LOG_RENDER_HYDRA, 2, "Engine %016llx %s", engine, engine_type);
 
   return PyLong_FromVoidPtr(engine);
 }
@@ -146,7 +146,7 @@ static PyObject *engine_free_func(PyObject * /*self*/, PyObject *args)
     delete engine;
   }
 
-  CLOG_INFO(LOG_EN, 2, "Engine %016llx", engine);
+  CLOG_INFO(LOG_RENDER_HYDRA, 2, "Engine %016llx", engine);
   Py_RETURN_NONE;
 }
 
@@ -185,7 +185,7 @@ static PyObject *engine_sync_func(PyObject * /*self*/, PyObject *args)
 
   engine->sync(depsgraph, context, settings);
 
-  CLOG_INFO(LOG_EN, 2, "Engine %016llx", engine);
+  CLOG_INFO(LOG_RENDER_HYDRA, 2, "Engine %016llx", engine);
   Py_RETURN_NONE;
 }
 
@@ -205,7 +205,7 @@ static PyObject *engine_render_func(PyObject * /*self*/, PyObject *args)
   engine->render(depsgraph);
   Py_END_ALLOW_THREADS;
 
-  CLOG_INFO(LOG_EN, 2, "Engine %016llx", engine);
+  CLOG_INFO(LOG_RENDER_HYDRA, 2, "Engine %016llx", engine);
   Py_RETURN_NONE;
 }
 
@@ -225,7 +225,7 @@ static PyObject *engine_view_draw_func(PyObject * /*self*/, PyObject *args)
   engine->render(depsgraph, context);
   Py_END_ALLOW_THREADS;
 
-  CLOG_INFO(LOG_EN, 3, "Engine %016llx", engine);
+  CLOG_INFO(LOG_RENDER_HYDRA, 3, "Engine %016llx", engine);
   Py_RETURN_NONE;
 }
 
diff --git a/source/blender/render/hydra/scene_delegate/blender_scene_delegate.cc b/source/blender/render/hydra/scene_delegate/blender_scene_delegate.cc
index 2cc06c447c33..bb6614f2be8a 100644
--- a/source/blender/render/hydra/scene_delegate/blender_scene_delegate.cc
+++ b/source/blender/render/hydra/scene_delegate/blender_scene_delegate.cc
@@ -11,7 +11,7 @@
 
 namespace blender::render::hydra {
 
-CLG_LOGREF_DECLARE_GLOBAL(LOG_BSD, "rhd.bsd");
+CLG_LOGREF_DECLARE_GLOBAL(LOG_RENDER_HYDRA_SCENE, "render.hydra.scene");
 
 BlenderSceneDelegate::BlenderSceneDelegate(pxr::HdRenderIndex *parent_index,
                                            pxr::SdfPath const &delegate_id,
@@ -22,14 +22,14 @@ BlenderSceneDelegate::BlenderSceneDelegate(pxr::HdRenderIndex *parent_index,
 
 pxr::HdMeshTopology BlenderSceneDelegate::GetMeshTopology(pxr::SdfPath const &id)
 {
-  CLOG_INFO(LOG_BSD, 3, "%s", id.GetText());
+  CLOG_INFO(LOG_RENDER_HYDRA_SCENE, 3, "%s", id.GetText());
   MeshData *m_data = mesh_data(id);
   return m_data->mesh_topology();
 }
 
 pxr::GfMatrix4d BlenderSceneDelegate::GetTransform(pxr::SdfPath const &id)
 {
-  CLOG_INFO(LOG_BSD, 3, "%s", id.GetText());
+  CLOG_INFO(LOG_RENDER_HYDRA_SCENE, 3, "%s", id.GetText());
   ObjectData *obj_data = object_data(id);
   if (obj_data) {
     return obj_data->transform;
@@ -44,7 +44,7 @@ pxr::GfMatrix4d BlenderSceneDelegate::GetTransform(pxr::SdfPath const &id)
 
 pxr::VtValue BlenderSceneDelegate::Get(pxr::SdfPath const &id, pxr::TfToken const &key)
 {
-  CLOG_INFO(LOG_BSD, 3, "%s, %s", id.GetText(), key.GetText());
+  CLOG_INFO(LOG_RENDER_HYDRA_SCENE, 3, "%s, %s", id.GetText(), key.GetText());
 
   ObjectData *obj_data = object_data(id);
   if (obj_data) {
@@ -80,7 +80,7 @@ pxr::VtValue BlenderSceneDelegate::GetLightParamValue(pxr::SdfPath const &id,
 pxr::HdPrimvarDescriptorVector BlenderSceneDelegate::GetPrimvarDescriptors(
     pxr::SdfPath const &id, pxr::HdInterpolation interpolation)
 {
-  CLOG_INFO(LOG_BSD, 3, "%s, %d", id.GetText(), interpolation);
+  CLOG_INFO(LOG_RENDER_HYDRA_SCENE, 3, "%s, %d", id.GetText(), interpolation);
 
   MeshData *m_data = mesh_data(id);
   if (m_data) {
@@ -120,7 +120,7 @@ bool BlenderSceneDelegate::GetVisible(pxr::SdfPath const &id)
 
 pxr::SdfPath BlenderSceneDelegate::GetInstancerId(pxr::SdfPath const &prim_id)
 {
-  CLOG_INFO(LOG_BSD, 3, "%s", prim_id.GetText());
+  CLOG_INFO(LOG_RENDER_HYDRA_SCENE, 3, "%s", prim_id.GetText());
   InstancerData *i_data = instancer_data(prim_id.GetParentPath());
   if (i_data) {
     return i_data->prim_id;
@@ -130,7 +130,7 @@ pxr::SdfPath BlenderSceneDelegate::GetInstancerId(pxr::SdfPath const &prim_id)
 
 pxr::SdfPathVector BlenderSceneDelegate::GetInstancerPrototypes(pxr::SdfPath const &instancer_id)
 {
-  CLOG_INFO(LOG_BSD, 3, "%s", instancer_id.GetText());
+  CLOG_INFO(LOG_RENDER_HYDRA_SCENE, 3, "%s", instancer_id.GetText());
   InstancerData *i_data = instancer_data(instancer_id);
   return i_data->prototypes();
 }
@@ -138,14 +138,14 @@ pxr::SdfPathVector BlenderSceneDelegate::GetInstancerPrototypes(pxr::SdfPath con
 pxr::VtIntArray BlenderSceneDelegate::GetInstanceIndices(pxr::SdfPath const &instancer_id,
                                                          pxr::SdfPath const &prototype_id)
 {
-  CLOG_INFO(LOG_BSD, 3, "%s, %s", instancer_id.GetText(), prototype_id.GetText());
+  CLOG_INFO(LOG_RENDER_HYDRA_SCENE, 3, "%s, %s", instancer_id.GetText(), prototype_id.GetText());
   InstancerData *i_data = instancer_data(instancer_id);
   return i_data->indices(prototype_id);
 }
 
 pxr::GfMatrix4d BlenderSceneDelegate::GetInstancerTransform(pxr::SdfPath const &instancer_id)
 {
-  CLOG_INFO(LOG_BSD, 3, "%s", instancer_id.GetText());
+  CLOG_INFO(LOG_RENDER_HYDRA_SCENE, 3, "%s", instancer_id.GetText());
   InstancerData *i_data = instancer_data(instancer_id);
   return i_data->transform;
 }
@@ -336,8 +336,11 @@ void BlenderSceneDelegate::check_updates()
   ITER_BEGIN (
       DEG_iterator_ids_begin, DEG_iterator_ids_next, DEG_iterator_ids_end, &data, ID *, id) {
 
-    CLOG_INFO(
-        LOG_BSD, 2, "Update: %s [%s]", id->name, std::bitset<32>(id->recalc).to_string().c_str());
+    CLOG_INFO(LOG_RENDER_HYDRA_SCENE,
+              2,
+              "Update: %s [%s]",
+              id->name,
+              std::bitset<32>(id->recalc).to_string().c_str());
 
     switch (GS(id->name)) {
       case ID_OB: {
diff --git a/source/blender/render/hydra/scene_delegate/blender_scene_delegate.h b/source/blender/render/hydra/scene_delegate/blender_scene_delegate.h
index 7db71c2de335..de0e67d6c904 100644
--- a/source/blender/render/hydra/scene_delegate/blender_scene_delegate.h
+++ b/source/blender/render/hydra/scene_delegate/blender_scene_delegate.h
@@ -18,7 +18,7 @@
 
 namespace blender::render::hydra {
 
-extern struct CLG_LogRef *LOG_BSD; /* BSD - Blender Scene Delegate */
+extern struct CLG_LogRef *LOG_RENDER_HYDRA_SCENE; /* BSD - Blender Scene Delegate */
 
 class BlenderSceneDelegate : public pxr::HdSceneDelegate {
   friend MeshData; /* has access to materials_*/
diff --git a/source/blender/render/hydra/scene_delegate/id.h b/source/blender/render/hydra/scene_delegate/id.h
index 8fbd202e947e..425933c2258b 100644
--- a/source/blender/render/hydra/scene_delegate/id.h
+++ b/source/blender/render/hydra/scene_delegate/id.h
@@ -39,6 +39,7 @@ template<class T> const T IdData::get_data(pxr::TfToken const &key) const
 }
 
 #define ID_LOG(level, msg, ...) \
-  CLOG_INFO(LOG_BSD, level, "%s (%s): " msg, prim_id.GetText(), id->name, __VA_ARGS__);
+  CLOG_INFO( \
+      LOG_RENDER_HYDRA_SCENE, level, "%s (%s): " msg, prim_id.GetText(), id->name, __VA_ARGS__);
 
 }  // namespace blender::render::hydra
diff --git a/source/blender/render/hydra/scene_delegate/instancer.cc b/source/blender/render/hydra/scene_delegate/instancer.cc
index 948da2ca03fa..554eac79d12d 100644
--- a/source/blender/render/hydra/scene_delegate/instancer.cc
+++ b/source/blender/render/hydra/scene_delegate/instancer.cc
@@ -59,7 +59,7 @@ void InstancerData::insert()
 
 void InstancerData::remove()
 {
-  CLOG_INFO(LOG_BSD, 2, "%s", prim_id.GetText());
+  CLOG_INFO(LOG_RENDER_HYDRA_SCENE, 2, "%s", prim_id.GetText());
   for (auto &it : instances_) {
     it.second.obj_data->remove();
   }
diff --git a/source/blender/render/hydra/scene_delegate/light.cc b/source/blender/render/hydra/scene_delegate/light.cc
index b14c07667893..ab4642f86389 100644
--- a/source/blender/render/hydra/scene_delegate/light.cc
+++ b/source/blender/render/hydra/scene_delegate/light.cc
@@ -85,7 +85,7 @@ void LightData::init()
   /* TODO: temporary value, it should be delivered through Python UI */
   data_[pxr::HdLightTokens->exposure] = 1.0f;
 
-  set_transform_to_object();
+  write_transform();
 }
 
 void LightData::insert()
@@ -96,7 +96,7 @@ void LightData::insert()
 
 void LightData::remove()
 {
-  CLOG_INFO(LOG_BSD, 2, "%s", prim_id.GetText());
+  CLOG_INFO(LOG_RENDER_HYDRA_SCENE, 2, "%s", prim_id.GetText());
   scene_delegate_->GetRenderIndex().RemoveSprim(prim_type_, prim_id);
 }
 
@@ -118,7 +118,7 @@ void LightData::update()
     bits = pxr::HdLight::AllDirty;
   }
   else if (id->recalc & ID_RECALC_TRANSFORM) {
-    set_transform_to_object();
+    write_transform();
     bits = pxr::HdLight::DirtyTransform;
   }
   scene_delegate_->GetRenderIndex().GetChangeTracker().MarkSprimDirty(prim_id, bits);
diff --git a/source/blender/render/hydra/scene_delegate/material.cc b/source/blender/render/hydra/scene_delegate/material.cc
index 2d5071d938f7..e6793deacad4 100644
--- a/source/blender/render/hydra/scene_delegate/material.cc
+++ b/source/blender/render/hydra/scene_delegate/material.cc
@@ -68,7 +68,7 @@ void MaterialData::init()
     Py_DECREF(result);
   }
   else {
-    CLOG_ERROR(LOG_BSD, "Export error for %s", id->name);
+    CLOG_ERROR(LOG_RENDER_HYDRA_SCENE, "Export error for %s", id->name);
     PyErr_Print();
   }
   Py_DECREF(module);
@@ -103,7 +103,7 @@ void MaterialData::insert()
 
 void MaterialData::remove()
 {
-  CLOG_INFO(LOG_BSD, 2, "%s", prim_id.GetText());
+  CLOG_INFO(LOG_RENDER_HYDRA_SCENE, 2, "%s", prim_id.GetText());
   scene_delegate_->GetRenderIndex().RemoveSprim(pxr::HdPrimTypeTokens->material, prim_id);
 }
 
diff --git a/source/blender/render/hydra/scene_delegate/mesh.cc b/source/blender/render/hydra/scene_delegate/mesh.cc
index a2a06b39d77a..50f65f26a269 100644
--- a/source/blender/render/hydra/scene_delegate/mesh.cc
+++ b/source/blender/render/hydra/scene_delegate/mesh.cc
@@ -40,7 +40,7 @@ void MeshData::init()
   }
 
   write_material();
-  set_transform_to_object();
+  write_transform();
 }
 
 void MeshData::insert()
@@ -60,7 +60,7 @@ void MeshData::remove()
     return;
   }
 
-  CLOG_INFO(LOG_BSD, 2, "%s", prim_id.GetText());
+  CLOG_INFO(LOG_RENDER_HYDRA_SCENE, 2, "%s", prim_id.GetText());
   scene_delegate_->GetRenderIndex().RemoveRprim(prim_id);
 }
 
@@ -78,7 +78,7 @@ void MeshData::update()
       bits |= pxr::HdChangeTracker::DirtyMaterialId;
     }
     if (id->recalc & ID_RECALC_TRANSFORM) {
-      set_transform_to_object();
+      write_transform();
       bits |= pxr::HdChangeTracker::DirtyTransform;
     }
   }
diff --git a/source/blender/render/hydra/scene_delegate/object.cc b/source/blender/render/hydra/scene_delegate/object.cc
index 7e5396cf8d8c..ea7de70e4b91 100644
--- a/source/blender/render/hydra/scene_delegate/object.cc
+++ b/source/blender/render/hydra/scene_delegate/object.cc
@@ -79,7 +79,7 @@ bool ObjectData::update_visibility()
   return ret;
 }
 
-void ObjectData::set_transform_to_object()
+void ObjectData::write_transform()
 {
   transform = gf_matrix_from_transform(((Object *)id)->object_to_world);
 }
diff --git a/source/blender/render/hydra/scene_delegate/object.h b/source/blender/render/hydra/scene_delegate/object.h
index 5297c576e28b..f7fd44c76168 100644
--- a/source/blender/render/hydra/scene_delegate/object.h
+++ b/source/blender/render/hydra/scene_delegate/object.h
@@ -29,7 +29,7 @@ class ObjectData : public IdData {
   bool visible;
 
  protected:
-  void set_transform_to_object();
+  void write_transform();
 };
 
 using ObjectDataMap =
diff --git a/source/blender/render/hydra/scene_delegate/world.cc b/source/blender/render/hydra/scene_delegate/world.cc
index 41697a9cf5a3..08f7a326db10 100644
--- a/source/blender/render/hydra/scene_delegate/world.cc
+++ b/source/blender/render/hydra/scene_delegate/world.cc
@@ -49,7 +49,7 @@ void WorldData::init()
 {
   ID_LOG(2, "");
 
-  set_transform();
+  write_transform();
 
   World *world = (World *)id;
   data_.clear();
@@ -129,7 +129,7 @@ void WorldData::insert()
 
 void WorldData::remove()
 {
-  CLOG_INFO(LOG_BSD, 2, "%s", prim_id.GetText());
+  CLOG_INFO(LOG_RENDER_HYDRA_SCENE, 2, "%s", prim_id.GetText());
   scene_delegate_->GetRenderIndex().RemoveSprim(pxr::HdPrimTypeTokens->domeLight, prim_id);
 }
 
@@ -157,7 +157,7 @@ pxr::VtValue WorldData::get_data(pxr::TfToken const &key) const
   return ret;
 }
 
-void WorldData::set_transform()
+void WorldData::write_transform()
 {
   transform = pxr::GfMatrix4d(pxr::GfRotation(pxr::GfVec3d(1.0, 0.0, 0.0), -90), pxr::GfVec3d());
 
diff --git a/source/blender/render/hydra/scene_delegate/world.h b/source/blender/render/hydra/scene_delegate/world.h
index d29806ec1298..083e0daff78a 100644
--- a/source/blender/render/hydra/scene_delegate/world.h
+++ b/source/blender/render/hydra/scene_delegate/world.h
@@ -37,7 +37,7 @@ class WorldData : public IdData {
   pxr::GfMatrix4d transform;
 
  private:
-  void set_transform();
+  void write_transform();
 
   std::map<pxr::TfToken, pxr::VtValue> data_;
 };
diff --git a/source/blender/render/hydra/utils.cc b/source/blender/render/hydra/utils.cc
index 8d37a14ef7ac..9a0462fc4ae3 100644
--- a/source/blender/render/hydra/utils.cc
+++ b/source/blender/render/hydra/utils.cc
@@ -1,9 +1,7 @@
 /* SPDX-License-Identifier: Apache-2.0
  * Copyright 2011-2022 Blender Foundation */
 
-#include <chrono>
 #include <filesystem>
-#include <sstream>
 
 #include <pxr/base/tf/stringUtils.h>
 
@@ -29,35 +27,6 @@ pxr::GfMatrix4d gf_matrix_from_transform(float m[4][4])
   return ret;
 }
 
-std::string format_duration(std::chrono::milliseconds millisecs)
-{
-  std::stringstream ss;
-  bool neg = millisecs < std::chrono::milliseconds(0);
-  if (neg) {
-    millisecs = -millisecs;
-  }
-  auto m = std::chrono::duration_cast<std::chrono::minutes>(millisecs);
-  millisecs -= m;
-  auto s = std::chrono::duration_cast<std::chrono::seconds>(millisecs);
-  millisecs -= s;
-  if (neg) {
-    ss << "-";
-  }
-  if (m < std::chrono::minutes(10)) {
-    ss << "0";
-  }
-  ss << std::to_string(m / std::chrono::minutes(1)) << ":";
-  if (s < std::chrono::seconds(10)) {
-    ss << "0";
-  }
-  ss << std::to_string(s / std::chrono::seconds(1)) << ":";
-  if (millisecs < std::chrono::milliseconds(10)) {
-    ss << "0";
-  }
-  ss << std::to_string(millisecs / std::chrono::milliseconds(1) / 10);
-  return ss.str();
-}
-
 std::string cache_image(Main *bmain,
                         Scene *scene,
                         Image *image,
@@ -65,8 +34,7 @@ std::string cache_image(Main *bmain,
                         ImageSaveOptions *opts,
                         ReportList *reports)
 {
-  const std::string default_format = ".png";
-
+  const char *default_format = ".png";
   char tempfile[FILE_MAX];
 
   if (!BKE_image_save_options_init(opts, bmain, scene, image, iuser, true, false)) {
@@ -74,20 +42,13 @@ std::string cache_image(Main *bmain,
     return "";
   }
 
-  std::string image_name;
+  char image_name[32];
+  snprintf(image_name, 32, "img_%016llx", (uint64_t)image);
 
-  if (image->source == IMA_SRC_GENERATED) {
-    image_name = pxr::TfMakeValidIdentifier(image_name.append(image->id.name + 2));
-  }
-  else {
-    image_name = image->filepath == NULL ? image->filepath : image->id.name + 2;
-    image_name = std::filesystem::path(image_name).filename().replace_extension().string();
-    image_name = pxr::TfMakeValidIdentifier(image_name);
-  }
+  strcat(image_name, default_format);
 
-  image_name.append(default_format);
-
-  BLI_path_join(tempfile, sizeof(tempfile), BKE_tempdir_session(), image_name.c_str());
+  BLI_path_join(
+      tempfile, sizeof(tempfile), BKE_tempdir_session(), "hydra_image_cache", image_name);
   STRNCPY(opts->filepath, tempfile);
 
   if (!BKE_image_save(reports, bmain, image, iuser, opts)) {
diff --git a/source/blender/render/hydra/utils.h b/source/blender/render/hydra/utils.h
index 05d7c85fc610..e71c64e9b5d8 100644
--- a/source/blender/render/hydra/utils.h
+++ b/source/blender/render/hydra/utils.h
@@ -3,7 +3,6 @@
 
 #pragma once
 
-#include <chrono>
 #include <string>
 
 #include <pxr/base/gf/matrix4d.h>
@@ -14,7 +13,6 @@
 namespace blender::render::hydra {
 
 pxr::GfMatrix4d gf_matrix_from_transform(float m[4][4]);
-std::string format_duration(std::chrono::milliseconds secs);
 std::string cache_image(Main *bmain,
                         Scene *scene,
                         Image *image,
diff --git a/source/blender/render/hydra/viewport_engine.cc b/source/blender/render/hydra/viewport_engine.cc
index f3db317a9a8b..802f2d9f3c1a 100644
--- a/source/blender/render/hydra/viewport_engine.cc
+++ b/source/blender/render/hydra/viewport_engine.cc
@@ -12,13 +12,15 @@
 #include "BKE_camera.h"
 
 #include "BLI_math_matrix.h"
+#include "BLI_timecode.h"
 
 #include "DEG_depsgraph_query.h"
 
 #include "GPU_matrix.h"
 
+#include "PIL_time.h"
+
 #include "camera.h"
-#include "utils.h"
 #include "viewport_engine.h"
 
 namespace blender::render::hydra {
@@ -259,10 +261,6 @@ void ViewportEngine::render(Depsgraph *depsgraph, bContext *context)
     render_task_delegate_->set_renderer_aov(pxr::HdAovTokens->color);
   }
 
-  if (renderer_percent_done() == 0.0f) {
-    time_begin_ = std::chrono::steady_clock::now();
-  }
-
   GPUShader *shader = GPU_shader_get_builtin_shader(GPU_SHADER_3D_IMAGE);
   GPU_shader_bind(shader);
 
@@ -285,21 +283,23 @@ void ViewportEngine::render(Depsgraph *depsgraph, bContext *context)
 
   GPU_shader_unbind();
 
-  std::chrono::time_point<std::chrono::steady_clock> time_current =
-      std::chrono::steady_clock::now();
-  std::chrono::milliseconds elapsed_time = std::chrono::duration_cast<std::chrono::milliseconds>(
-      time_current - time_begin_);
+  if (renderer_percent_done() == 0.0f) {
+    time_begin_ = PIL_check_seconds_timer();
+  }
 
-  std::string formatted_time = format_duration(elapsed_time);
+  char elapsed_time[32];
+
+  BLI_timecode_string_from_time_simple(
+      elapsed_time, sizeof(elapsed_time), PIL_check_seconds_timer() - time_begin_);
 
   if (!render_task_delegate_->is_converged()) {
-    notify_status("Time: " + formatted_time +
+    notify_status(std::string("Time: ") + elapsed_time +
                       " | Done: " + std::to_string(int(renderer_percent_done())) + "%",
                   "Render");
     bl_engine_->flag |= RE_ENGINE_DO_DRAW;
   }
   else {
-    notify_status(("Time: " + formatted_time).c_str(), "Rendering Done");
+    notify_status((std::string("Time: ") + elapsed_time).c_str(), "Rendering Done");
   }
 }
 
diff --git a/source/blender/render/hydra/viewport_engine.h b/source/blender/render/hydra/viewport_engine.h
index a362cf21bfba..2f893d71a9d1 100644
--- a/source/blender/render/hydra/viewport_engine.h
+++ b/source/blender/render/hydra/viewport_engine.h
@@ -3,8 +3,6 @@
 
 #pragma once
 
-#include <chrono>
-
 #include <pxr/imaging/hd/renderBuffer.h>
 
 #include "GPU_batch.h"
@@ -46,7 +44,7 @@ class ViewportEngine : public Engine {
   void notify_status(const std::string &title, const std::string &info);
 
  private:
-  std::chrono::time_point<std::chrono::steady_clock> time_begin_;
+  double time_begin_;
 
   DrawTexture draw_texture_;
 };