Blender 3.6.1 laggy in the render preview #110662

New Issue

Cris-Alencar · 2023-08-01T00:15:08+02:00

Cris-Alencar commented

2023-08-01 00:15:08 +02:00

System Information
Operating system: Windows-10-10.0.19045-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 3070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 531.79

Blender Version
Broken: version: 3.6.1 Release Candidate, branch: blender-v3.6-release, commit date: 2023-07-16 02:43, hash: edc1a09966a7
Worked: (newest version of Blender that worked as expected)

Short description of error
Blender got laggy in the render preview in 3.6.1 version

Exact steps for others to reproduce the error
It works well when it's in the solid mode, but whenever it's in the render preview, even with few meshes, it gets very slow after the last update. It was working normally before.
Thank you for your time.

**System Information** Operating system: Windows-10-10.0.19045-SP0 64 Bits Graphics card: NVIDIA GeForce RTX 3070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 531.79 **Blender Version** Broken: version: 3.6.1 Release Candidate, branch: blender-v3.6-release, commit date: 2023-07-16 02:43, hash: `edc1a09966a7` Worked: (newest version of Blender that worked as expected) **Short description of error** Blender got laggy in the render preview in 3.6.1 version **Exact steps for others to reproduce the error** It works well when it's in the solid mode, but whenever it's in the render preview, even with few meshes, it gets very slow after the last update. It was working normally before. Thank you for your time.

Cris-Alencar added the

labels 2023-08-01 00:15:08 +02:00

Cris-Alencar commented

2023-08-01 04:32:20 +02:00

PS.: it happens specially when the camera is activated by pressing 0.

Pratik Borhade commented

2023-08-01 06:19:05 +02:00

Hi, thanks for the report. Could you share .blend file?
Does this happen when camera is stable? or when you lock the camera and navigate in viewport? (it could be due to undo push)

Hi, thanks for the report. Could you share .blend file? Does this happen when camera is stable? or when you lock the camera and navigate in viewport? (it could be due to undo push)

Pratik Borhade added

Status

Needs Information from User

and removed

Status

Needs Triage

labels 2023-08-01 06:19:14 +02:00

Cris-Alencar commented

2023-08-01 17:34:22 +02:00

Hi Pratik, thank you very much for your reply. Yes, I'm sending an example, It happens when I lock the camera, maybe I found what is going on. There's a message that showed up: "viewport setup compositor not fully supported". By default in the startup file, I have the denoise node activated, it was working well in 3.6, could it be an issue in 3.6.1? When I mute the node, everything gets normal again.

blender_test.blend

2.4 MiB

Blender1.png

849 KiB

Dimitris-Papanikolaou commented

2023-08-02 09:17:03 +02:00

It could be the denoise node running in cpu and basically throttling your render at each sample. Much like how if you turned on OpenImageDenoise on Accurate prefilter instead of Optix for Viewport Denoising. It will be a lot slower due to the fact that OpenImage is not yet supported to run on gpu, only on cpu.

Pratik Borhade commented

2023-08-02 11:09:20 +02:00

from: e8c660b855
The denoiser executes on the CPU and we pay for the CPU<->GPU round trip to
memory, so this is not realtime, as one might expected. And is just a
temporary implementation until OIDN supports GPU execution.

Guess this will be improved in future. @OmarEmaraDev , would you consider this a bug?

> from: e8c660b855381228c4401f650f8485559563b2d9 The denoiser executes on the CPU and we pay for the CPU<->GPU round trip to memory, so this is not realtime, as one might expected. And is just a temporary implementation until OIDN supports GPU execution. Guess this will be improved in future. @OmarEmaraDev , would you consider this a bug?

Pratik Borhade added

Download

What's New

Blender Studio

Manual

Developers Blog

Documentation

Benchmark

Blender Conference

Development Fund

One-time Donations

Blender 3.6.1 laggy in the render preview #110662