You bet ya. I am making 16 bit mode forced I myself have a 256 MB graphic card. and the performance increase on mine is noticible...so I am sticking with 16 bit, the quality increase just isnt worth the hit on performance imo . On crap comp 1 : 2 GHZ with 16MB gcard it won't run anywhere near smooth on vsync or above 60 fps. On crap comp 2 600 MGHz 4 MB gcard, the game does not run at all in 32 bit mode (well unless you count about 98% frame loss).

The performance loss is staggering