1) This problem doesn't hinder me, I just notice it when I'm up close/focused on a rock, if I don't, I barely notice it.
2) It does however become very ugly, almost nauseating to look at once I'm in a cave full of snow. Outside it's fine. Fields of snow look beautiful no matter what, it's only the rocks covered in snow
3) 1 + 2 can both easily be forgotten by me, all I need to know is if it's like this for others, so that I don't go out and buy a new 360 for no reason. If that's how the snowy rock textures are, that's how they are. This is still easily the most fun game I've ever played.