toolmen: i have a wierd performance problem , after few min of smooth play fps drops to 5-10. i tried with all settings from low to ultra and with old and this newest beta drivers .. all the time the same ... 5 minutes realy good gameplay and kaboom slideshow
atm im running at quad 9550 , 4GB ddr2 1066, gf 8800gt (sadly my ati44870x2 fried few days ago grrr)
Sounds like a memory leak.
Either that or your GPU is overheating and throttling itself to prevent damage. Does this just happen with the witcher or other games?