Half-Life 2 Episode 2: Laggy flashlight problem

So I just bought The Orange Box today, and after finishing Portal and trying TF2 out (which are both awesome), I tried to play Episode 2.Now, I don't know what's going on, but the framerate is pretty good and stable until I turn on the flashlight, which completely takes half of the framerate away, if not more, making it impossible to play.I have no problems with the other games (in fact, they play superb here), but I just can't seem to fix this one out.Also tried 3 different drivers, and until now the latest beta nVidia one (169.01) gave out the best results, but still unplayable.My specs are:AMD x2 6000+ (3.00Ghz)EVGA NVidia 7900GTKO SuperClocked 256Mb2GB RAM DDR23 hard disks which makes a total of (around) 500GBs

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