Is SetBuffer Backbuffer() located inside the main loop? If so, then the program is basically canceling out the Flip command, which will cause the seizure type effect.
I don't know if the problem is in the Graphics command because I'm unable to set my screen to that resolution.
I also can't say because there's no code posted ;)
I don't know if the problem is in the Graphics command because I'm unable to set my screen to that resolution.
I also can't say because there's no code posted ;)