Description

The DerivedDataCache for the whole SkeletalMesh doesn't need to be rebuilt while previewing the mask painting, since it will be rebuilt when exiting the painter anyway. 

Steps to Reproduce
  1. Build and run EngineTest.
  2. Open the Owen Skeletal Mesh asset in the mesh editor.
  3. Click on Activate Cloth Painting.
  4. Select the OwenCoat cloth and the Max Distance mask to paint.
  5. Press the H key to preview. 
  6. Observe the very long pause while the DDC is being rebuilt.

(Note it was always freezing a bit, but that used to be a lot more reactive)

Have Comments or More Details?

There's no existing public thread on this issue, so head over toAnswerHub just mention UE-99215 in the post.

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Fixed
ComponentPhysics - Clothing
Affects Versions4.26
Target Fix4.26
Fix Commit14268331
Release Commit14302559
CreatedSep 8, 2020
ResolvedSep 8, 2020
UpdatedOct 7, 2020