Grainy Textures

Well I finally bought FS9 and once it was installed, I set it up how and I cannot beilive how fast it is!! I can fly with no clouds at Vancouver, most detail on and get 27 FPS in the defauly 737!! I limit my frames to 16, I never thought I would see the day when my sim would be smooth, but the problem is the ground textures appear grainy, I tried to take some screenshots but in the screenshot they apperead fine, you can see what my settings are from my sig, some help would be grealy appreciated!!