Set the calculations then leave it. Does it still lock up? Overnight? I have had some pretty good results with the cloth room recently. Having pushed out 20 drape frames (6 stepping) and 300 frame simulations, things have been looking good. Check and re-check for intersecting body-parts and size your cloth up slightly if you have to. Also, the crazier your dynamic settings are, the more it time it may need to process. As well as the more verts/ploygons there are, the more time it will take to calculate your cloth dynamic. try these: 40 90 100 .0140 .0150 .0020 .5 .1 .02 and enable colision friction so it cancells out the last two up there but you got the setting i used on a sim. drape 20 stepping 6 collisions@ 0.844 0.980 0.704 0.360 Now I know this may not be the settings you want but try them and post if things went okay or not. At least this way, the setting arent so dynamic they take forever to calculate. I'm still learning myself, I hope this helps. Good luck!