The "Material Preview" mode is very slow. #101967

New Issue

Konstantin · 2022-10-21T07:08:41+02:00

Konstantin commented

2022-10-21 07:08:41 +02:00

System Information
Operating system: Arch Linux, Windows 10/11.
Graphics card: RTX 2070, RTX 3070Ti.

Blender Version
Broken: All version 3.0 - 3.3.
Worked: 2.93.

Short description of error
Material Preview mode is very slow. It wasn't that slow before.

Even with a small scene, it's slow.

Open a model.
Z -> "Material Preview".
The preview window moves jerkily.

There was no such thing in version 2.93, everything there is much smoother.

**System Information** Operating system: Arch Linux, Windows 10/11. Graphics card: RTX 2070, RTX 3070Ti. **Blender Version** Broken: All version 3.0 - 3.3. Worked: 2.93. **Short description of error** Material Preview mode is very slow. It wasn't that slow before. Even with a small scene, it's slow. 1. Open a model. 2. Z -> "Material Preview". 3. The preview window moves jerkily. There was no such thing in version 2.93, everything there is much smoother.

Konstantin commented

2022-10-21 07:08:41 +02:00

Added subscriber: @imlegr

Vyacheslav Kobozev commented

2022-10-21 15:52:35 +02:00

Added subscriber: @Vyach

Vyacheslav Kobozev commented

2022-10-21 15:52:35 +02:00

Do you have consistent perfomance drop, or only after you start eevee/lookdev mode?
It is better to make screencast video.
Are you sure, all drivers are fresh and Blender see GPU properly?
May be there are shader compiling?

1. Do you have consistent perfomance drop, or only after you start eevee/lookdev mode? It is better to make screencast video. 2. Are you sure, all drivers are fresh and Blender see GPU properly? 3. May be there are shader compiling?

Konstantin commented

2022-10-21 17:26:44 +02:00

When I press Z -> "Material Preview", it switches the window to the material view mode on objects. At this very moment the performance drops dramatically and when I spin the model it moves jerkily. I can't record a video because I have a contract for all the models I have and I can't show them.
There is nothing wrong with the drivers and GPU. The same scene in Blender 2.93 opens smoothly.
All the shaders are compiled. I first of all wait until the shaders are compiled, and then I do something.

1. When I press Z -> "Material Preview", it switches the window to the material view mode on objects. At this very moment the performance drops dramatically and when I spin the model it moves jerkily. I can't record a video because I have a contract for all the models I have and I can't show them. 2. There is nothing wrong with the drivers and GPU. The same scene in Blender 2.93 opens smoothly. 3. All the shaders are compiled. I first of all wait until the shaders are compiled, and then I do something.

Iliya Katushenock commented

2022-10-21 17:39:11 +02:00

Added subscriber: @mod_moder

Iliya Katushenock commented

2022-10-21 17:39:11 +02:00

If there is no way to somehow recreate it on public resources, then fix it ... how?

Konstantin commented

2022-10-21 19:21:09 +02:00

I opened the blender, waited for the caching to finish. Then I switched between modes and rotated the view around the model.

system-info.txt
gpu_debug_log.txt

I opened the blender, waited for the caching to finish. Then I switched between modes and rotated the view around the model. [system-info.txt](https://archive.blender.org/developer/F13742120/system-info.txt) [gpu_debug_log.txt](https://archive.blender.org/developer/F13742121/gpu_debug_log.txt)

Vyacheslav Kobozev commented

2022-10-22 01:42:43 +02:00

In #101967#1435609, @imlegr wrote:

When I press Z -> "Material Preview", it switches the window to the material view mode on objects. At this very moment the performance drops dramatically and when I spin the model it moves jerkily. I can't record a video because I have a contract for all the models I have and I can't show them.

There is nothing wrong with the drivers and GPU. The same scene in Blender 2.93 opens smoothly.

All the shaders are compiled. I first of all wait until the shaders are compiled, and then I do something.

Use blender demo files for video.
If the issue appears only with certain file, you should make research and find what minimum combination of details will produce the bug. Combine similar with free assets.
Then upload file with issue for public test. Otherwise, there is no way to find and fix it.

> In #101967#1435609, @imlegr wrote: > 1. When I press Z -> "Material Preview", it switches the window to the material view mode on objects. At this very moment the performance drops dramatically and when I spin the model it moves jerkily. I can't record a video because I have a contract for all the models I have and I can't show them. > 2. There is nothing wrong with the drivers and GPU. The same scene in Blender 2.93 opens smoothly. > 3. All the shaders are compiled. I first of all wait until the shaders are compiled, and then I do something. Use blender demo files for video. If the issue appears only with certain file, you should make research and find what minimum combination of details will produce the bug. Combine similar with free assets. Then upload file with issue for public test. Otherwise, there is no way to find and fix it.

Konstantin commented

2022-10-22 04:17:23 +02:00

In #101967#1435740, @Vyach wrote:

In #101967#1435609, @imlegr wrote:

When I press Z -> "Material Preview", it switches the window to the material view mode on objects. At this very moment the performance drops dramatically and when I spin the model it moves jerkily. I can't record a video because I have a contract for all the models I have and I can't show them.

There is nothing wrong with the drivers and GPU. The same scene in Blender 2.93 opens smoothly.

All the shaders are compiled. I first of all wait until the shaders are compiled, and then I do something.

Use blender demo files for video.
If the issue appears only with certain file, you should make research and find what minimum combination of details will produce the bug. Combine similar with free assets.
Then upload file with issue for public test. Otherwise, there is no way to find and fix it.

I agree with you. I will try to make a file that I can upload here so that it can be viewed and analyzed. But I am also sure that there is something useful in the logs I sent.

> In #101967#1435740, @Vyach wrote: >> In #101967#1435609, @imlegr wrote: >> 1. When I press Z -> "Material Preview", it switches the window to the material view mode on objects. At this very moment the performance drops dramatically and when I spin the model it moves jerkily. I can't record a video because I have a contract for all the models I have and I can't show them. >> 2. There is nothing wrong with the drivers and GPU. The same scene in Blender 2.93 opens smoothly. >> 3. All the shaders are compiled. I first of all wait until the shaders are compiled, and then I do something. > > Use blender demo files for video. > If the issue appears only with certain file, you should make research and find what minimum combination of details will produce the bug. Combine similar with free assets. > Then upload file with issue for public test. Otherwise, there is no way to find and fix it. I agree with you. I will try to make a file that I can upload here so that it can be viewed and analyzed. But I am also sure that there is something useful in the logs I sent.

Pratik Borhade commented

2022-10-22 06:38:22 +02:00

Changed status from 'Needs Triage' to: 'Needs User Info'

Pratik Borhade commented

2022-10-22 06:38:22 +02:00

Added subscriber: @PratikPB2123

Konstantin commented

2022-10-28 20:42:23 +02:00

How can I see the amount of FPS in the view window? So that I can visually see and send the file with the biggest performance drop.

Vyacheslav Kobozev commented

2022-10-30 07:16:28 +01:00

In #101967#1438400, @imlegr wrote:
How can I see the amount of FPS in the view window? So that I can visually see and send the file with the biggest performance drop.

You can set fps of scene to 60 and start animation, so fps counter will be available.

Otherwise you should use external tool like Riva.

> In #101967#1438400, @imlegr wrote: > How can I see the amount of FPS in the view window? So that I can visually see and send the file with the biggest performance drop. You can set fps of scene to 60 and start animation, so fps counter will be available. Otherwise you should use external tool like Riva.

Pratik Borhade commented

2022-11-30 16:35:05 +01:00

@imlegr hi, did you manage to create a test file?

Thomas Dinges commented

2022-12-15 16:38:25 +01:00

Added subscriber: @ThomasDinges

Thomas Dinges commented

2022-12-15 16:38:25 +01:00

Changed status from 'Needs User Info' to: 'Archived'

Thomas Dinges closed this issue

2022-12-15 16:38:25 +01:00

Thomas Dinges commented

2022-12-15 16:38:25 +01:00

No activity for more than a week. As per the tracker policy we assume the issue is gone and can be closed.

Thanks again for the report. If the problem persists please open a new report with the required information.

No activity for more than a week. As per the tracker policy we assume the issue is gone and can be closed. Thanks again for the report. If the problem persists please open a new report with the required information.

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The "Material Preview" mode is very slow. #101967