No one is suggesting to spend crazy money on a AQ Vodka 50’, 25’ run. Let me reiterate what I said in one of my earlier post to @charles1dad
“My recommendation would be to use LINKUP LAN from your modem to Muon Pro Filter + Muon LAN pigtail into your Streamer”.
The cost here is $115 for a very high quality 50FT LAN cable plus Muon Filter which comes with a captive LAN on streamer end. This solution if it works for @charles1dad, keeps his gorgeous audio room clutter free (no modem or router with LPS in his audio room).
In my case, if I follow your suggestion by moving the Xfinity modem to my audio room (3rd floor) to keep short LAN to my switch (next to my streamer)…the problem with this scenario, it weakens the Wi-Fi signal to my devices on 1st floor. Keeping my modem on 2nd floor is most effective way to serve 30 plus devices that are operating on Wi-Fi signal. As I said numerous times, each of us have unique needs and priorities. We are here to share our experiences for our readers. We can only hope, they learn from our trials and adapt to what may works better in their unique environment. I always try to take the approach of less is more and it has served me very well.
BTW, Ethernet LAN cables are good upto 100 meters….zero latency. And the shielded LAN‘s are immune to EMI/RFI interferences.