I bought a Alienware m15x not to long ago, I installed a few games (Starcraft 2, TF2). Every thing was working fine until I bought CoD4 from Steam. CoD4 had a really bad frame rate lag problem, but i noticed it was also affecting Starcraft 2. I have re installed CoD4 a few times and it has changed nothing. Starcraft will run fine some days were I will get 60+ fps but other days i will get 12 fps. This only started to happen after i had bought CoD4 from Steam. I have no clue why this would happen and i could use some help.