Very Important! Video Inside.. Shadows & Anti-Aliasing & Distance View problem

[Raist]

You can sometimes get a shimmering affect from your mip-map/texture filtering settings (AF, Tri/Bi-linear filtering). May be able to reduce it some if you tweak the filtering options (in-game and/or driver). Negative LOD Bias can also do some weird things with AF active--might want to set it to clamping the value.