Windows xp pro sp2
Mobo - asus p5gd2 premium
Lga775 - prescott 3.2ghz
4 gigs 533 ddr2
160 gig raid 0
ATI HD4850
700w PSU
Water and air coloed
When in COD4, I suffer from terrible fps and split second lockups. As soon as I join frames drop to about 50 fps. I have everything set as low as it will go, and I am not overclocking at all. Nothing is overheating either. The more people standing around me, the worse it gets. The more smoke, fire, even wrose. This happens if I am in a full server or an empty one.
The only thing sharing the IRQ is the Microsoft UAA bus driver. I have tried changing drivers, disabling system functions, doing updates, running all stress tests and even bought new memory, and power supply. All tests have passed. All drivers give the same results. I also changed bios settings in an attempt to figure it out, but changed them back as it never made a difference.
This was never a problem before and I cant find the conflict. For a long time I was guessing that the UAA bus was conflicting with the video card. Sending sound and video information at the same time. I just reformatted and same results.
This is not a processor, Hard drive, memory, or video card issue. I used a x1900xtx before the hd4850 and the game played great. But then all the sudden, and I really can't pinpoint why, I started getting this problem. So I bought the hd4850. Any help would be insanely appreciated, I am about to put a fist into this thing.
