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Poor particle edit performance with subsurf modifier
Open, Needs Triage by DeveloperPublic

Description

System Information
Operating system: Wintows 10 Home 64Bit
Graphics card: GTX1080Ti

Blender Version
Broken: (2.80)
Worked: (2.79b)

Short description of error
Particle edit performance (with a subsurf) is a lot worse in 2.80 than before. In 2.79 you can edit the hair without lag if you go slowly, but in 2.80 it's going to lag no matter what. And the lag is generally a lot worse.

Exact steps for others to reproduce the error

  1. Open ParticleEdit.blend in 2.79
  2. Switch to particle edit mode and try any editing tools on both of the monkeys. Especially the one on the right.
  3. Do the same thing in 2.80

Details

Type
Bug