No matter what level of graphics I use (right from minimum up to 1680x1080 4xAA, 4xAF with all settings turned on, except Vsync), I experience major slowdown in FPS periodically in the game. It tends to happen went entering a large new area.
I have found that this can always be fixed by Alt+Tabbing out of the game and straight back in. Just waiting in-game for the fps to rise again doesn't work!
Anyone any ideas what might be causing this?
<<Solution detailed in post 6>>
Phenom II X4 955