Been getting back into BF3, but I'm getting lag. I'm really sensitive with my lag. I can have 40-50 FPS in a game, but still claim it unplayable. I've tested CanYouRunIt? and it just so happens to be my Graphics Card isn't the best for BF3 (AMD Radeon HD 6670). What would be the best (but cheapest) graphics card for running BF3 at a steady 60 (or more) FPS?