Maniphest T101162

Blender 3.3 version vewport works much slower than 3.0.1 version of Blender
Closed, Archived
Actions

Assigned To
None
Authored By
Peter Semashko (Piton_812)
Sep 18 2022, 10:37 AM
Tags
  • BF Blender
Subscribers
Omar Emara (OmarSquircleArt)
Peter Semashko (Piton_812)
Pratik Borhade (PratikPB2123)
Thomas Dinges (dingto)

Description

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_v2.7z214 MBDownload

Event Timeline

Peter Semashko (Piton_812) created this task.Sep 18 2022, 10:37 AM
Pratik Borhade (PratikPB2123) changed the task status from Needs Triage to Needs Information from User.Sep 19 2022, 6:03 AM
Pratik Borhade (PratikPB2123) added a subscriber: Pratik Borhade (PratikPB2123).

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

Peter Semashko (Piton_812) added a comment.EditedSep 24 2022, 9:47 AM

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

test_SLOW_Blender_3_3_v2.7z214 MBDownload

Pratik Borhade (PratikPB2123) added a comment.Sep 28 2022, 5:19 AM

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.

Pratik Borhade (PratikPB2123) updated the task description.Sep 28 2022, 5:19 AM
Peter Semashko (Piton_812) added a comment.EditedOct 2 2022, 8:55 AM
In T101162#1423998, @Pratik Borhade (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)

  1. 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

Pratik Borhade (PratikPB2123) changed the task status from Needs Information from User to Needs Triage.Nov 25 2022, 11:54 AM
Omar Emara (OmarSquircleArt) changed the task status from Needs Triage to Needs Information from User.Dec 6 2022, 2:05 PM
Omar Emara (OmarSquircleArt) added a subscriber: Omar Emara (OmarSquircleArt).

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 (dingto) closed this task as Archived.Fri, Jan 20, 4:25 PM
Thomas Dinges (dingto) added a subscriber: Thomas Dinges (dingto).

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.