Hey, i was wondering if someone would know why this is happening, whenever i play this game for more then 15-20 minutes i really start to lose alot of frames as if it creates some sort of cache of files that slow it down. I have a dual Intel Pentium4 3.4 Ghz with 2 GB of RAM and nVidia AGP 7800, so hardware wise i really shouldn't have any problem running this game.

Sounds like your PC may be overheating. I recommend getting a program that tells you the temperature and check it frequently while running the game.

I actually kind of doubt that it would be overheating, I've never had any problems with any other games doing this, My graphics card tells me the heat on that, and that never really gets above 49 and it says its threshold is 115. But if it is overheating, are there any free programs you would recommend?

usually if you check the cd that came with your mother board you should find an utility that can be install with windows