Decided to reinstall on my shiny new machine(after the old one died a painful death) and was astonished by how horrible the framerate was. Nearly all the maps I can get 60fps, but looking in certain sections my framerate would dip into the 40's and upper 30's for no reason. Looking online I found out that some peeps were putting in -onethread in the target section of their UT3 shortcut. I did this and voila, I earned an instant 10-15 fps in some spots. Apparently UT3 doesn't like dual core setups. Odd that I never had to this on my old quad core setup, but have read reports online that it is happening to these as well.