I have an ATI Radeon HD 4870 X2 and I try playing Half-life 2 on this computer. When I play HL2, the terrain, especially water, blinks constantly. This happens in mods also.
I've tried updating my drivers, and I have the most current version, but this doesn't fix the problem. I've also tried turning all my graphics to the lowest settings, which doesn't work either. Any suggestions?