My recent experience echos those here who recommend separating server, streamer, and DAC. I actually moved my server to a separate room with my modem and router, and their own dedicated power line, leaving my streamer and DAC in the room with my main system.
I also believe the streamer and especially the DAC can make a significant difference in the quality of sound you hear. Adding a Sonore Signature Rendu SE Optical streamer to feed my DAC via USB was an improvement, and not just because of the optical connection because I was already using fiber connections. However, I am still interested in trying out the Innuos Pulsar based on the many positive endorsements as well as the ability to compare their Sense app to Roon, which I use now.