Let me just add that sometimes if you're inflating or smoothing a lot then you may experience that moment of unresponsiveness. Just go to your menu and Re-initialize python. I usually turn off the python window, re-initialize and then open the python window again and I can continue. But I'd say this happens very rarely now and I use smooth and inflate a lot! Just out of curiousity, what clothing items were you trying to fit from V3 to morphed V3?