My suspicion is that there is something slighty "off" with your computer. Some driver issue or possibly (malware?) processes hugging resources. Paging file on a full/badly fragmented disk? It all certainly runs a lot quicker in my alternate OS... there must be something going on. I dont understand how a undefragged drive could interfere with throwing polygons around... but anyways, I hav'nt defragged for probably two years :S so I'll do that now.