I think I know what you are talking about. What I experienced is that somehow a non-100% view seems not to be processed completely. I had a D3 10000 ISO shot that looked great at 100 % view after editing, but looked way too noisy at the "fit to screen" view. Same with chromatic aberrations in a D800 image....Something is wrong.
I checked with V6 and there all is fine with the same images.
I'll raise a support ticket, as I have some other oddities to report, and come back here with the response of the support team.
Edit: corrected a typo