Im not sure if i have a software or hardware problem.When i start to play a game graphics are ok. after about 2 minutes everything gets choppy.Battlefield 2 is the worst.It use to run great on my PC.(P4 2.8ghz 512ram) Now even in single player mode with everything on low its choppy after a couple minutes. My other games have started to suffer and ivehad to turn settings down on EA's sports games.I have the latest drivers and everything.I have no viruses. Anyone have any ideas?