Value of a premium Ethernet cable

The LinkUp cable @soix mentioned is an excellent cable. I am running a 50FT length from my modem to a switch near my streamer. The 50FT cable eliminated the mesh network. Should you choose to try LinkUp cable, I want you to be aware the 22AWG version is quite stiff, so no sharp bends. Instead, consider LinkUp 26AWG version, which is much from flexible.  

This:https://www.aliexpress.com/item/1005003924584091.html

Perfext from Etherregen to server

I would look on HifiShark to find some bulk AQ cable. You never know if you'll get lucky unless you try.

I scored a partial roll of Carbon at a great price. It goes from the Verizon box to the router, and then to the streamer.

B

+2 on the LinkUp cable recommendation. I wouldn’t hesitate to run it from the router to switch, with the short run after the switch using a better cable or even LinkUp into streamer. Should be an improvement over the cheap cable.
Add Purist Audio Design CAT7 to the list as well for the short run into streamer.

I use and like the Network Acoustics Eno streaming system (passive filter and cable). It made a nice improvement in my system. 

Buy with a solid return policy though. If you don’t hear any improvement (unlikely) or don’t like the change in sound, you should be able to return. 

Consider changing the long run of ethernet cable to fibre from the Etheregen.