;Terrain Polygon Count
:Choose from Low, Medium, High, or Extreme. Set to Low. This has some effect on performance and affects the quality. More means smoother landscapes I believe and models might get smoother, little effect compared to performance dropmore detailed landscape far away from you. If you appreciate a good view then use overkill unless your computer can't handle it.
;Water reflection
:Choose from None, "Sky only", "Sky and terrain", "Sky, terrain, and trees", "Almost everything". Have set to NONE unless you have a semi-old card (FX5600 or better atleast) and a good CPU (AMD athlon 2000+, 2GHZ P4). It has a great effect on performance, turning it on will use alot, but with a good comp it only gives a small drop in performance and it does make the water look nice.