I've palyed N4 on my Radeon 8500 in OpenGL fine in the past, but since
installing newer drivers and a Radeon tweaker (not sure which is causing the
problem) the screen freezes when in OpenGL mode (it is fine in D3D though).
The game is still running because I can hear the cars going around the
track, just the dispklay is frozen solid and requires a hard reset. Anyone
know the solution to this problem?