I take a serious performance hit with this installed. I go from a solid 60 (frame limited) in VAB to around 20 even with nothing loaded. I tried both the tex packs in the OP and also a plain black 128x128 square with the same results. Specs are win7 64, nvidia 660ti GTX, amd phenom II quad @3.8ghz, more ram than unity can address. Looks great though!