Good advice and in place in my system.
My Xfinity modem uses an iFi Elite for its PSU. My Nucleus+ and Nagra Streamer are powered by Tony Pardo PSUs and use AQ Vodka ethernet cables to connect to the modem. There are no other devices connected. The Nagra Streamer uses a proprietary fiberoptic cable to connect to the Playback Designs MPD-8. I do not think I can create a better signal path.
I agree that Roon sounds fantastic, but QC sounds different and at least with a brief listen, sounds better.

