AA改為2及AF改為8可以使FPS數提升

Performance Increases:
For a possible performance increase try setting Anisotropic filtering to 8x and MSAA 2x.
On my PC, setting AF @ 8x and MSAA @ 2x, res @ 1280x800 on a 8800GT SLI, I have a very stable frame rate of ~30-60fps, this is with LOD & Texture filtering set to High, with shadows and effects set to Medium and HSAO off – it looks great.