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Maniphest T72745

Sculpt Lag With Mirror Modifier On
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Description

System Information
Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: GeForce RTX 2060/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 441.66

Blender Version
Broken: version: 2.82 (sub 6), branch: master, commit date: 2019-12-27 20:38, hash: rBc2a37867f21b
Worked: (optional)

Short description of error
Blender becomes super laggy when I try to sculpt on my model with mirror modifier on.

Exact steps for others to reproduce the error
With the attached blend file, try sculpting on it with mirror modifier OFF and On.

Sculpt Lag with mirror modifier.blend15 MBDownload

Event Timeline

Pasang Bomjan (irex124) created this task.Dec 28 2019, 9:37 AM
Pasang Bomjan (irex124) added projects: Sculpt, Paint & Texture, Tracker Curfew.Dec 28 2019, 9:39 AM
Jacques Lucke (JacquesLucke) closed this task as Archived.Dec 28 2019, 2:09 PM
Jacques Lucke (JacquesLucke) claimed this task.
Jacques Lucke (JacquesLucke) added a subscriber: Jacques Lucke (JacquesLucke).

Unfortunately, that is caused by general slowness of the mirror modifier. You might be able to make it a bit faster by disabling e.g. the Merge option.

While it is most likely possible to improve the performance of the mirror modifier, this does not fall into the category of a bug fix. Therefore I'm closing this.

Just for reference, the profiling results: