Huge lag in Image Editor/Render result window when zoom in/out on images #106923

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Tyler · 2023-04-14T02:36:46+02:00

Tyler commented

2023-04-14 02:36:46 +02:00

System Information
Operating system: Arch Linux/kernel 6.2.10
Graphics card: RTX 3080ti

Blender Version
Broken: 3.5.0, 1be25cfff1
Worked: 3.0.1

Short description of error

Exact steps for others to reproduce the error
Based on the default startup or an attached .blend file (as simple as possible).
Huge lag in Image Editor/Render result window when zooming in/out on images, be it a default scene in blender or any other blend files I've tried. See attached video.

**System Information** Operating system: Arch Linux/kernel 6.2.10 Graphics card: RTX 3080ti **Blender Version** Broken: 3.5.0, 1be25cfff18b Worked: 3.0.1 **Short description of error** **Exact steps for others to reproduce the error** Based on the default startup or an attached .blend file (as simple as possible). Huge lag in Image Editor/Render result window when zooming in/out on images, be it a default scene in blender or any other blend files I've tried. See attached video.

2023-04-14 08-24-52.mkv

7.9 MiB

Tyler added the

labels 2023-04-14 02:36:47 +02:00

Jesse Yurkovich commented

2023-04-14 03:03:03 +02:00

This is probably a duplicate of #106092. Can you try the latest daily build of 3.6 and verify if this is the case: https://builder.blender.org/download/daily/

Jesse Yurkovich added

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labels 2023-04-14 03:03:14 +02:00

Tyler commented

2023-04-14 03:27:22 +02:00

The zooming is almost smooth with a small window size on 3.6. But it still feels very laggy if the image editor window size is enlarged on my 4k monitor, whereas the lagging is almost unbearable on 3.5 even with a small window size with no image opened.

Jesse Yurkovich commented

2023-04-14 05:00:49 +02:00

Are you saying that 3.4 is still obviously faster than 3.6 with a 4k window? On my 4k screen I can't quite notice much difference either way (Windows + nVidia here).

Tyler commented

2023-04-14 06:49:08 +02:00

Yes. It's quite noticeable. Maybe it only happens on Linux? See attached video.

2023-04-14 12-47-00.mkv

4.3 MiB

Jesse Yurkovich commented

2023-04-14 07:00:59 +02:00

Can you upload a similar video showing what it looks like with 3.4? Generally performance issues aren't tracked here unless there's a large regression from a prior version so having a 3.4 video comparison might help.

Tyler commented

2023-04-14 08:17:29 +02:00

Sorry, my mistake. It's actually the same with 3.4.1. Smooth on small window size, but laggy if maximized. Looking into it, I found that the latest version that works flawlessly for me is 3.0.1. From 3.1.0 on, the drawing of the Image Editor took a small regression. Zooming in and out feels a little laggy on maximized, but barely noticeable if you don't compare it carefully to 3.0.1. And you can see from the video for 3.1.0, window maximizing animation shows this black margin/border around the window which is not present with 3.0.1. And from 3.3.2, it took another regression. Zooming in/out feels very laggy. That's all I've found from my testing of the official releases. Hope it helps.

2023-04-14 13-45-59_blender_3.1.0.mkv

6.9 MiB

2023-04-14 14-00-57_blender_3.3.2.mkv

4.3 MiB

2023-04-14 13-45-20_blender_3.0.1.mkv

3.4 MiB

Jesse Yurkovich added

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labels 2023-04-14 08:22:33 +02:00

Germano Cavalcante commented

2023-04-14 17:27:22 +02:00

3.0.1 is a long time ago, I remember image editor has the engine reworked once, but I'm not sure if it was before or after 3.0.1.

I can't replicate the problem here.

@Jeroen-Bakker, does that ring any bell?

3.0.1 is a long time ago, I remember image editor has the engine reworked once, but I'm not sure if it was before or after 3.0.1. I can't replicate the problem here. @Jeroen-Bakker, does that ring any bell?

Jeroen Bakker commented

2023-04-14 22:01:51 +02:00

There are already plans to improve towards 3.0 performance. No need to have another report for it.

3.5.1 will have same performance as 3.4.

There are already plans to improve towards 3.0 performance. No need to have another report for it. 3.5.1 will have same performance as 3.4.

Jeroen Bakker closed this issue

2023-04-14 22:01:53 +02:00

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