I have been having performance issues with halo 2, halo 1 ran perfectly, and halo reach runs at 1080p 60+ FPS on my computer with original Graphics on online multiplayer 8v8 and the campaign with no problems. But halo 2 only works at 20-30 FPS with the enhanced graphics in performance mode on the campaign. The textures and shadows seem to be the lowest quality, and I can’t move with it not dropping below 30 FPS. It does run somewhat well in the old graphics, 45-60 FPS, but the game freezes when switching and can not connect with my friend and play co-op.