You can try using "Laptop Mode". This will make the game use less CPU (and therfore less battery on your notebook) and that might free up whatever is choking on your machine.
Well I'm playing on a desktop. Sorry, I guess I removed my system specs when I edited the post:
AMD 64 3400
GeForce 6800 GT 256mb ram
Windows XP SP2
I highly doubt the game is coming close to using up my CPU or anything else. I tried Laptop mode and the problem still occurrs. Any other thoughts?