HD3850 CoD4 performance issues

[de_yogurt]

so i have my fairly new (about 4 months old) radeon hd3850. its a decent card for the games i play except CoD4. my fps is so unstable. going from 100fps down to around 50 or so fps. but has also dropped to below 20. i am confused and have no idea. i have tried every combo of graphic settings to change and still the same. i really need some help. ohh its the agp version. i can turn off AA and AF and shadows and all that other crap. and for nothing. please help. i really hope this wasnt a waste of money and im starting to think it was. maybe im simply missing something. any comments, suggestions welcome. thanks and have a good one!

Yogurt

[ziggo0]

What's the CPU that's driving the 3850?

[de_yogurt]

P4 3.0 Prescott w/ HyperThreading
OCZ Tech. Low Latency 2GB DDR PC3200
Sound Blaster Audigy 2 ZS

160GB Seagate

PC Power and Cooling Silencer 610

[de_yogurt]

anyone else have any thoughts? thanks for the help.

Yogurt

[chevro1et]

Are you experiencing the problem while playing single player or online?

[prime81]

Disable Antialiasing, turn off shadows, Water Detail to Low, and change ur textures from auto to High or Extra. Also disable specular map(shiny objects such as ur gun).

I play cod4 competitively, try these out!

[Suprchargd]

I haven't played CoD4 in a while, but my HD3850 ran it at 1280x1024 with everything maxed out perfectly fine. By that I mean I don't think I ever dropped below 30fps no matter how crowded it got. That was with "Rig 1" in my sig, so it could be possible the rest of your PC is bottlenecking/holding you back.

[Badbonji]

You could try RivaTuner and overclock the card to see if it is the card holding you back, otherwise the setup you have is quite old now, beinh a single core and fairly slow which could be a bottleneck.