How do i get the ripping of the mountains to dissapear? Anyone know?-Thanks

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Do you have color set to 32 bit? If not give that a try.Good luck

That's actually the clouds at fault and not the mountains.But yes I believe it's a gfx card issue and you may need to try updating your drivers.With my rady when I upgraded to the latest catalyst drivers I got that same effect plus stuttering, went back to the previous drivers and the problem disappeared.