Looks great inside and out SteelViking, Haven't noticed any FPS hits here - GTX250 also tried it on a GTX8800 (Similiar Spec) no problem there either.
Laptop I'm getting around 20FPS but thats prob down to it being a loptop more than anything - doesn't run SH5 the smothest at the Best of times

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Excellent work though, definite must have.