Don't Know If you have the F/a Thing it download where you can use a autoexec, Have you tried turning Punkbuster off? I dont think any of the servers run pb so its safe to turn off.
Another thing is if you have a Intel HT processor Id turn HT off in BIOS. I'd Turn off Sync Frames if you have that on and any GL settings off.
Another thing.... play around with r_primitivies. Don't know what default is but try r_primitivies 2 I think 1 is default
Edited by Agent, 17 January 2015 - 04:17 PM.