fps problem

hi all, i have a big problem with my fps (frames per second)
i'm playing vietcong and all of a sudden my fps drops from over 120 to 10 and lower. sometimes this happens once each hour, sometimes every minute, and always this stays for about 45seconds. i saw also that this has nothing to do with the place i am or level, wapen i'm carriing,... i formatted my pc, reinstalled the game and still this doesn't work...

another problem maybe VC players can help me with: if you press "end" button to say a programmed message, if i push than a button to chose witch i want to take, the game crashes, when i scroll down or up i go from the very first to the very last in one time can you also help me out with that?


thanks jeroen
aka
[EFK] Ali de pounani

ps. my pc has 512ddr ram, amd 2800+ and hercules 7600 pro 128mb (i guess)

 

Just curious, have you updated drivers and/or the video game itself?