@mitch2 +1
I owned Eno Streaming System and sold it. I didn’t like the mellowed out presentation and rolled off sound.
I now use iFi LAN iSilencer - it doesn’t do 💩 but it also doesn’t harm the sound.
I have it before the Ethernet cable that feeds the streamer.
I would recommend not to waste money, time and effort on Ethernet tweaks. Continue upgrading your components to higher quality ones and treat your room. That’s where you’ll get your ROI.