I am using a Gigabyte 8600GT 256MB PCIe card. In MS Train Simulator I am experience a little bit of flashing white triangles in the game, frequently while in areas of heavy scenery. I have heard of this difficulty being ordinary among Vista users but I am using XP and still have the problem. As a matter of fact Vista works well, apart from the FPS drops actually low. So there is no win-win situation in any of OS. Driver-wise I have tried 158.22, 162.18 and the current 163.67 beta. None of them have solved the difficulty. As a test, I borrowed a 7600GS from work and that works very well in XP. And my laptop which utilizes a graphics chip as of another manufacturer works 100% in both operating systems. It sounds like a graphics driver error of some form. Is there something I am able to do or am I fixed with potentially having to downgrade my card?
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