Hi! On my Macbook 13" (spring 2010) I'm having a hard time playing TF2 running from Steam MAC. Specs: 2GB Ram Nvida GT 320m 256mb Intel 2.26 ghz Core 2 duo I'm confused because the specs should be fine to run the game at medium settings. However, I experience stutters and jittery framerate in high action areas even when I'm playing on the lowest possible settings and resolution. It really takes the fun out of this game.... Anything that I'm doing wrong, or is this game just poorly optimized...?