Thanks,
When this issue first cropped up I thought "compression" was some process that occurred when the .res file was built at HTC for distribution, didn't realize it was affecting me on the development side. Then later I thought it was just due to really small details like rivets, so I left them out of the N-map.
Now that I've discovered problems even in major details line panel lines, I posted my nVidia filter to see if someone can confirm I had some setting incorrect, and posted pics to show that affects so others could could confirm it happens on their skins too - not sure if its worse on NMF skins vs painted?