Graal can't handle 32bit?

[Infernix]

So recently I purchased a Radeon X850 pro 256mb to play the new games out like Battle Field 2, F.e.a.r, etc.
But anyways I go on graal O_o and wow wtf it said for me to disable light effects. Certainly didnt have those problems back with a Nvidia 5200 which is no way as close as good as the current gfx card I have now. I can play graal n/p with the lights off but there is another problem. I cant go full screen with level editor without lag with graal on and another program running like Remote Control. In 16 bit colors I can but with 32 bit rofl no way. Rlly annoying ya know.

So I came to the conclusion that my gfx card is to good for graal without me lowering performance. So can you tell me is there a way to fix this or is this going to be fixed in the future with graal4 or w/e?

(Updated drivers and all Catalyst 5.12 I believe its called)
I run a 2.85ghz ,HT Pent.4 ,1gb of Ram