i have 1gb of ddr400 memory, and i noticed long boutes of lag, where the game would freeze completly for a good 10 seconds then return to life, i alt tabbed out and notices my momory was anywhere from 93% to 99% in use! thats just rediculouse seeing as the recomended is 512, i mean if it was running great i would figure its using all my memory to increase performance, but it still runs crappy. is this a common issue? im running the 1.52 patch and have 256 megs of memory on my geforce fx5500