Back in June I could play BF3 on medium settings with around 30 FPS on a Dual Core 3ghz Phenom II and a Radeon HD 5770. Since then I have put in a quad core Phenom II and a Radeon HD 7870. My fps will not go above 25 on low, or ultra settings. It has made the game unplayable. I have updated my graphics drivers and reinstalled the game and I still get the same results.