Hi there The 50% cpu thingy is probably the Hyperthreading - if you press crtl alt del and bring up the task manager- tab to processes and look for poser.exe highlight poser.exe and right click - on the menu look at set affinity - you'll probably see two cpu 's cpu 0 and 1 this is hyoerthreading working. You could switch off the HT - I found no real difference.You could set the affinity for poser to work only on CPU 1 , if you have problems with other programs slowing down.I do not and an calculating dynamic cloth in the background as I speak. set the bucket size to 64 instead of 32 - it really does make a difference, use the bucket size in octets (8,32,64 etc) it works then. thats all folks