I realize I could manipulate the Roon settings to get a better output as detailed above, but wonder why should I have to go through all that effort.
Well, you know why. It’s because Roon has such a good UI, and it integrates your own music. (Plus us crazies love manipulating the hell out of our systems...) But as Mark @mgrif104 said, it’s frustrating to knock up against an irreducible penalty. I like your "analogue brain" hypothesis. One way of testing it is to use QC and Roon to play your local music. I haven’t tried that... it’s a good question.

