Bad performance with texture painting depending on multi-thread settings
Open, IncompletePublic

Description

System Information
Windows 6 64bit, Nvidia Quadro K4000

Blender Version
Broken: Newest official 2.78c (hash e92F235283)

Short description of error

The more I have threads enabled, the slower the texture painting performance is.
I get best performance when setting the threads manually to 1, from render settings.
Maximum I can have is 24 threads.

Exact steps for others to reproduce the error

Make a cube, unwrap, make new image (4096 x 4096), enter texture paint mode, start painting.
Go to render settings and experiment with different thread settings.

My other possibly related settings:
Window Draw Method: Triple Buffer
Region Overlap enabled

Details

Type
Bug
Dalai Felinto (dfelinto) triaged this task as "Incomplete" priority.Mon, May 22, 3:38 PM

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