Saw a few other threads with this problem, but no solutions that worked. When applying match grain to a clip, it seems to work perfectly most of the time, but every so often, for a few frames, it will just go crazy and crank the grain way up.
Also, it won’t accept certain layers as sources for the grain; if I try it on another clip and tell it to use that layer it works, but not on the clip I need it to. Any thoughts?