Hello OP and friends, So interesting all the different ways to improve digital! Good discussion. I have gone to much effort to improve my digital front end. Many have contributed ideas I have used:
Verizon Fios > Verizon Modem (with wifi disabled) Powered by Sean Jacobs LPS.
From this I run all ethernet feeds to non audio as well as Eero Pro 6 Mesh wifi (three units wired around house). I also run short ethernet into JCAT M12 Gold Switch (also powered by Sean Jacobs LPS) this will feed only my two audio systems >
Short run into GTT DeJitterit Switch and Clean Modem. So I have stacked two nice switches in line and found it further improves sound. The DeJitterit Switch / Clean Modem creates a separate 'CLEAN NETWORK' that only serves my audio systems. From this 'Clean Side' I run a quality ethernet cable feed to each of my 2 streamers. I use no wall plate couplers, instead using JCAT ethernet couplers if needed. I run my long cables through the wall plate to reduce couplings.
The GTT DeJitterit also comes with a 'Clean Wifi' Router, designed to be quiet and use minimal bandwidth, purely for Remote Roon or Streamer Access.
So I have eliminated all the other internet traffic from entering my clean music side of things. And thee is significant internet traffic on most of our homes!
Each and all of these things have enhanced my digital sound. I have also demo'd the NA Tempus switch, and that is also nice. But I owned the JCAT switch, which is very comparable, and then chose the GTT Dejitterit switch / clean modem as the best sound.
Also agree strongly with keeping all computer / wall warts etc away from audio and on different circuits.
Take care!