Before getting there there is lots of noise on the line digital not being grounded
put a ZPS on your router I use Linear Tube Audio which comes with a great DC cable to the router this makes a nice improvement , Ethernet cables too especially at the end point on your Ethernet hub something of quality with a LPS power supply and good quality clock , then your streamer ,innuos makes a good variety of streamers ,and sense app is very good .everything counts.