Yeah, I was wondering if it was a mesh preview thing and tried that to no avail. I'm not sure if this is a solution or a happy coincidence, but the problem seemed to go away when I upped to maximum quality the instant draw slider. Can you guys see if that has any effect? 

(I was also playing around a lot with other diplay options at the time, so it could be other things I altered at the same time, but I think it was that one that might have done it).

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