I gave the dress a quick test now. The simulated animation in motion is really nice but I noticed 2 issues:

->Without movement or with just very minor the cloth has still some uncontrolled movement. This doesn't seem to be the case when I switch to CPU with this specific mesh, which is quite nice. I think you said in the past that it isn't really fixable with GPU, right?

->Bigger animations (I tested it with a 15 seconds/30frames one) fails to import