We are talking about D3 that features one of the most bloatware engines of all time. I am currently (re)playing it on a Core2Duo@2.4Ghz, 3GB Ram@400Mhz, nVidia 9600GT 512MB PCIe-16x, Win 7 32bit Professional, all drivers updated and tweaked, game settings 1280x1024, AA:0, ultra quality. Showfps reveals that game goes constantly from 65fps (max) to 19 (min), depending on the scenery and stays around 20-35 when in combat. Not even thinking of HD resolution or enabling AA. FFS, even CoD4 plays better on my system. Same **** with Q4. Engine can be heavily optimized though (play Prey for example which is ID4 Tech powered) but porting D3 on sub-GHz, sub-gaming standard GFX cards with an OS featuring terrible 3D drivers? Waste of resources.