About for 3 months or so, whenever I launch a game, the game starts up fine, usually nice and smooth, but then generally the mem usage spikes up to 600,000 K + (usually games like TF2 or GMOD which were never hardware intensive for me). I have tried a variety of methods to stop it, disabled anti virus, nothing seems to work. Any ideas? Intel Pentium 4 2.40 Ghz, 2.39 Ghz, 3 gig of ram, and a radeon hd 2600 series agp.