Blender 3.3 version vewport works much slower than 3.0.1 version of Blender #101162

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Peter Semashko · 2022-09-18T10:37:09+02:00

Peter Semashko commented

2022-09-18 10:37:09 +02:00

System Information
Operating system: Windows 10
Graphics card: Geforce RTX 2060

Blender Version
Broken: 3.2 and 3.3. version not work well
Worked: 3.0.1 Blender version

I have the scene with about 15 mln vertexes. In Blender 3.0.1 version everything works well, model in vieport (object mode and sculpt mode) turns smoothly and fast. But in Blender 3.2 and 3.3 versions the same scene works with big lags and freezes in viewport (in object mode and in sculpt mode)

Exact steps for others to reproduce the error
Open the scene in Blender 3.0.1 version - everything smooth and no lags when you turn the model in vieport.
Open the same scene in Blender 3.3 and a lot of lags and freezes when you turn the model in vieport.

Video is attached
test_SLOW_Blender_3_3_v2.7z
3_0_VS_3_3.mp4

**System Information** Operating system: Windows 10 Graphics card: Geforce RTX 2060 **Blender Version** Broken: 3.2 and 3.3. version not work well Worked: 3.0.1 Blender version I have the scene with about 15 mln vertexes. In Blender 3.0.1 version everything works well, model in vieport (object mode and sculpt mode) turns smoothly and fast. But in Blender 3.2 and 3.3 versions the same scene works with big lags and freezes in viewport (in object mode and in sculpt mode) **Exact steps for others to reproduce the error** Open the scene in Blender 3.0.1 version - everything smooth and no lags when you turn the model in vieport. Open the same scene in Blender 3.3 and a lot of lags and freezes when you turn the model in vieport. Video is attached [test_SLOW_Blender_3_3_v2.7z](https://archive.blender.org/developer/F13563153/test_SLOW_Blender_3_3_v2.7z) [3_0_VS_3_3.mp4](https://archive.blender.org/developer/F13506100/3_0_VS_3_3.mp4)

Peter Semashko commented

2022-09-18 10:37:09 +02:00

Added subscriber: @Piton_812

Pratik Borhade commented

2022-09-19 06:03:02 +02:00

Added subscriber: @PratikPB2123

Pratik Borhade commented

2022-09-19 06:03:02 +02:00

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

Pratik Borhade commented

2022-09-19 06:03:02 +02:00

HI, thanks for the report. Please upload the affected blend file.

Peter Semashko commented

2022-09-24 09:47:47 +02:00

Hello! I upload the file (I pack blend file to archive)

test_SLOW_Blender_3_3_v2.7z

Hello! I upload the file (I pack blend file to archive) [test_SLOW_Blender_3_3_v2.7z](https://archive.blender.org/developer/F13563153/test_SLOW_Blender_3_3_v2.7z)

Pratik Borhade commented

2022-09-28 05:19:35 +02:00

Thanks for the file. I'm unable to confirm the performance drop. How much ram do you've?
Please check the CPU and ram usage at the time of slowdown.

Thanks for the file. I'm unable to confirm the performance drop. How much ram do you've? Please check the CPU and ram usage at the time of slowdown.

Peter Semashko commented

2022-10-02 08:55:08 +02:00

In #101162#1423998, @PratikPB2123 wrote:
Thanks for the file. I'm unable to confirm the performance drop. How much ram do you've?
Please check the CPU and ram usage at the time of slowdown.

If you righ that the reason is about CPU or another computer specifications, thats mean that Blender 3.1 is less demanding on performance than 3.3 version? Becouse even if the reason of freezez is in specifications, I tested this file on the same PC and 3.1 version load the file ok but 3.3 version load the file with big freezes.
I get tthe freezes with 3.3 version of Blender on PC with this specification:

CPU Core I7 - 10750H
RAM: 16 GB
Windows 10 (x64)

Here the screenshot of loaded file Blender 3.3. from the PC (where I have lags)
Here the screenshot of oladed file Blender 3.1 from the same PC (when no lags)

CPU almost not used... only RAM used more on Beldner 3.3 (8.7 GM when the Beldner 3.1 used 6.2 GB)... but I don't think that this is the reason of lags... becouse there is a lot of unused memory else

> In #101162#1423998, @PratikPB2123 wrote: > Thanks for the file. I'm unable to confirm the performance drop. How much ram do you've? > Please check the CPU and ram usage at the time of slowdown. If you righ that the reason is about CPU or another computer specifications, thats mean that Blender 3.1 is less demanding on performance than 3.3 version? Becouse even if the reason of freezez is in specifications, I tested this file on the same PC and 3.1 version load the file ok but 3.3 version load the file with big freezes. I get tthe freezes with 3.3 version of Blender on PC with this specification: CPU Core I7 - 10750H RAM: 16 GB Windows 10 (x64) 1. Here the screenshot of loaded file Blender 3.3. from the PC (where I have lags) ![image.png](https://archive.blender.org/developer/F13605438/image.png) 2. Here the screenshot of oladed file Blender 3.1 from the same PC (when no lags) ![image.png](https://archive.blender.org/developer/F13605444/image.png) CPU almost not used... only RAM used more on Beldner 3.3 (8.7 GM when the Beldner 3.1 used 6.2 GB)... but I don't think that this is the reason of lags... becouse there is a lot of unused memory else

Pratik Borhade commented

2022-11-25 11:54:22 +01:00

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

Omar Emara commented

2022-12-06 14:05:54 +01:00

Added subscriber: @OmarEmaraDev

Omar Emara commented

2022-12-06 14:05:54 +01:00

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

Omar Emara commented

2022-12-06 14:05:54 +01:00

Can you reproduce this with the default cube? Subdivide it until you reach 15 millions and see if you can notice a drop in FPS.

Thomas Dinges commented

2023-01-20 16:25:46 +01:00

Added subscriber: @ThomasDinges

Thomas Dinges commented

2023-01-20 16:25:46 +01:00

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

Thomas Dinges closed this issue

2023-01-20 16:25:46 +01:00

Thomas Dinges commented

2023-01-20 16:25:46 +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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Blender 3.3 version vewport works much slower than 3.0.1 version of Blender #101162