My PC is a AMD Phenom II Black Edition 3,2 Ghz, quad core, 4 Gb ram, Bus 1333, and my graphic card is an ATI Radeon 5750, I play many games like CoD BO, Battlefield bad company 2, and more with no problems, but testing the demo I only get abaut 45 FPS !!! (with a resolution of 1680 x 1050)
Any ideas of what could be wrong??
PS: I tested it with Windows 7 and Windows XP (I have both installed) and I had same FPS in both operating systems.