can't be any of those, nope not using overclocking, and on A6, only this game messes up. And the problem occurs on multiple systems, any systems that have a GeForce. And the problem is so random that sometimes you can play and it won't happen, sometimes it will. It's can't be any computer based problems because of the fact that happens with : A. Nvidia chipsets 2. It happens on multiple systems, and no they aren't having other problems no other games (even A6 ones) mess up.
We also think that the problem may come from the fact that it may be a shader issue and it may be because it's not compiled.