While everything else runs very smoothly, any kind of smoke (from smoke grenades, mortar, tank guns, collapsing buildings) slows graphics down to single digit FPS. The effect is proportional to the relative area of screen covered by smoke.
I've tried turning down every graphics setting there is (both in-game and driver) to no avail. Is this a common problem (or even a "feature" of BC2) or is there a way to fix it?
Relevant specs: i5-760 2.8GHz, 8GB RAM, ATI HD 5770 1GB.