I am running KF on my Macbook Pro 5,3 with 4g ram, 9600 GPU, and 2.8ghz processor, and the FPS is horrible. Even on low graphics settings with VSync disabled, my FPS barley goes above 12-15 in firefights. If i go stand in a corner with no players or enemys on my screen it goes to like 40fps, but as soon as i shoot or other characters come on my screen, it gets horrible.