I recently purchased fallout 3 but because of my weak graphics card I had to do a few ini tweaks. I disabled most passes but not texture pass and disabled the refraction shader. Now the game is much faster but there is a problem. Where grass and dirt textures should be there is a green surface that appears to be above the ground. I am guessing this is what the player is supposed to see when far away but it does not go away when nearby. The same thing happened with oblivion but it could be fixed by disabling distant land. If anyone knows what ini setting might have caused this please tell me.