Problem with Final IK

[Deckard_89]

Yes I am having this same problem. I notice in late update it generally doesn't behave as well as in fixed update, even without Final IK - though it is a necessity as in fixed update the hair (that I am trying to simulate) will float above the character instead of staying place. In late update, though the cloth stays on the body, unfixed particles will flicker around and go crazy, until you stop using the IK features.

I am using it with Final IK's "FBBIK Grounder" for foot correct placement.