I got this computer and it runs alot of games good but I get lag spikes. Like really bad ones. In GTA IV the auto configure graphics give me a High to medium settings and It will lag really bad and even when I turn them down I lag. I have a 8gb of ram AMD Radeon HD 6490 i5 2450M CPU 2.50GHz. I play BF3 and get bad lag spikes and I even ask some of the people who have super computers and they said I could run BF3 at the settings they were giving me. When ever I update the card it gives me a AMD Radeon 7400. Any help please. Thanks.