I have Ultimate Hunting 4. It's a hoot. At work, I run it on an IBM Think Centre w/Pentium 4. At home I have a new Compaq w/ Intel Dual Core ViiV Tecnology. My home computer has gobs of space. At home, the movements are a little jerky and the mouse moves are sometimes exagerated. Is there anything I can do to make my home unit run smooth like the IBM? Thanks!