nvidia drivers 306.23
I had this exact same problem with those drivers, quite often a mountain terrain texture would go like 50% tranparent so I’d see it and what was behind it depending on my camera angle. It wasn’t always obvious but it happened enough and was discombobulating enough that I downgraded back to the previous 304 beta drivers.
The problem is caused by Ambient Occlusion. Disable it in Nvidia control panel.
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