I have a somewhat High end PC and when i try to play my FPS starts at 60 and stays there for 10 seconds, then drops to 25-30 for 10 more seconds, then goes back up to 60 FPS Again. Its extremely annoying and makes the game unenjoyable for me, I tried updating GPU drivers, tried both dual and quad core CPU's, tried turning on ADVANCED PERFORMANCE for my HDD, i cant seem to find ANYTHING to fix the problem. It does the same EXACT thing no matter what resolution/graphics settings i have turned on. ANY suggestions that could help make this better so i can enjoy this amazing game would be much appreciated. Oh and btw nothing is overclocked, and nothing is overheating....
Specs:
XFX Radeon HD 4890 1gb DDR5
6gb Mushkin DDR2 RAM
Windows Vista Ultimate 64-Bit
Hitachi Deskstar 1TB Sata II 7200rpm 16mb Buffer HDD
AMD Phenom II X4 940 (Black Ed.) CPU (Quad 3.0Ghz)(AM2+)
CCC 9.7 (Recommended Version for DA:O)
750 Corsair PSU