Hi guys,
Since i have installed Windows 7 (64 bit) my Fps rate everytimes gets down to 5 or 10FPS after i ahve played for a short while. Usually this just appears when there is dust in the Fans but i've cleaned them yesterday so this can't be the Problem !
The Fanspeed of my videocard is at 100% but this didn't help too.

What graphics card?

GeForce 8800GTS i could play the demo without any problems untill I Reinstalled windows from 32 to 64 Bit.
I also got the lowest Graphic setting !

what are the other parts of your pc ? Ram size might be too small, cause there is a memory loop in the game.

4GB ram processor: Dual core @ 2,66Ghz

Hmmm when I minimize the game for a few minutes i can play normal again but just 5-10 minutes :/

probably is a memory leak....

check the memory usage while in game,use the task manager (ctrl+alt+del)

You should have posted this in the PC forums > http://www.gamesas.com/forums/viewforum.php?f=40

Does sound like memory leak, can you run the game in a window? If so do that whilst keeping an eye on taskmanager or whatever programme you use to monitor your computer and graphics card usage.

Ingame my Meory usage is at 68% (thats what my keyboard says) and 100% processor

Videocard at 100°C - 110°C while playing :/ game minimized 81°C