well, that sucks .
if i use MEP v5 or v6 i also get a flat sun and have to use that optional mod to fix it but this mod doesnt provide a flat sun unless i increase the AA over 4x or enable that Gamma Correction .
I guess different nvidia cards behave in different ways . Fubar2Niner, if i use your nvidia inspector settings the game is unplayable, strange reflections, the water looks horrible, the land is all black and those jagged lines on the edge of the turm are still there so ... nvidia , hell yeah .