Hello , I need help , my games became very laggy , idk why. I bought last year Prototype 2 and I played it yesterday , and it became incredibly laggy. Tomb Raider too! I bought a new MSI GTX 660 2GB GDDR5 , but they are still very laggy. Especially GTA4 , I know that GTA4 is badly coded for PC but it's still laggier than before , can someone help me? PS: My CPU is AMD Athlon II X2 250 3,0GHz ( Dual Core ) and I've got 2x2GB 1333 ram