Problems with physx collison

[ZZpbt.]

Preventing self intersection in an input mesh is difficult because detecting such things tends to be a history-dependent process (technically detecting intersections isnt history dependent, but finding the way to undo them is), so you're right, you'd have to resim with a cloth setup or something to solve those intersections.

Can you clarify what you mean by particle-to-particle offset?

Willl do an example scene tomorrow