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Maniphest T102169

Blender quickly slows down to grinding halt until hiding-unhiding blender window
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Description

System Information
Samsung Q330 with ram upgraded to 2x4 GB
Operating system: Linux lite
Graphics card: Nvidia 310M

system-info.txt17 KBDownload

lshw_hardware_info.txt21 KBDownload

uname_info.txt113 BDownload

lscpu_cpu_info.txt2 KBDownload

os-release.txt382 BDownload

Blender Version
Broken: 3.3.1; 3.4.0 alpha d1d2f002c7ca
Worked: 2.93.9

Short description of error
After opening any somewhat complex scene, blender slowly becomes more laggier, after a few minutes it becomes unusable, and slowing down the system in general. How quickly it slows down seems to depend on scene complexity (how many shaders, geometry, textures, etc are used). Attached is tree model from polyhaven, it causes lag in 2-3 minutes, simpler scene i worked on slowed down to unsuable in 7-10 minutes.
Hiding and unhiding resets lag, but it slows down again. After hiding, system lag stays for a few seconds, then clears up. I exported model from attached scene into fbx in 3.3.1 and imported into 2.93.9, 2.93.9 handled it without slowdown. Affected versions did not show significant usage of ram/cpu.

Exact steps for others to reproduce the error

island_tree_01_1k.blend.zip98 MBDownload

Open attached scene, do something (switch tabs, add/delete shader nodes, or just wait), lag should come soon

Related Objects

Event Timeline

Artem (Topsoil) created this task.Oct 30 2022, 7:04 PM
Pratik Borhade (PratikPB2123) changed the task status from Needs Triage to Needs Information from User.Oct 31 2022, 2:53 PM
Pratik Borhade (PratikPB2123) added a subscriber: Pratik Borhade (PratikPB2123).

Thanks for the report. I'm unable to confirm abrupt slowdown in uploaded file (checked in 3.4).
As far as I can tell, the hardware you've been using is not supported for blender 2.91 and following versions. Check Blender Requirements page
Check whether you've newer GPU drivers, that might improve the situation: https://docs.blender.org/manual/en/dev/troubleshooting/gpu/index.html
Check with factory settings: File → Defaults → Load Factory Settings

Pratik Borhade (PratikPB2123) closed this task as Archived.Nov 11 2022, 5:48 AM

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.