This is just out of curiosity.
I just realized, that z-fighting is often “animated” although the camera does not move a bit.
That means, that you can look at a wall and every frame other pixels “win” the fight.
I think that´s strange, because the input-data is bit by bit exactly the same. No vertices were changed, no modelview or projection matrix was touched, it´s all the same.
But still you can get this “animated” z-fighting.
Doesn´t that mean, that the hardware does not work correctly? Although this is of course a precision issue, the calculations should all yield to the same correct or wrong results, if the input data is the same, but nothing should change just out of fun.
Maybe someone knows more about that.