Thanks @thyname
So as an update,
I have the nuc running Rock OS headless, in a fanless case. Roon UI is flying! Also, SQ improved. But not sure if improvement is due to the new Core setup, or because the new DAC is continuing to break-in. Regardless,I am not complaining!
Next, I would like to ad an LPS. I don’t have much hope that SQ will improve further, mainly because the core is not connected to the DAC directly (its connected through network), but figure it’s worth a try.