Move router far from hifi components?

distance and balanced cables are your friends

Wifi is not recommended for hifi. Going usb/ethernet avoids these issues.
My router/modem are in another room far away.
But as we all know, usb/ethernet have their own issues.

I have never really tested whether or not wireless causes interference or degradation with audio equipment.  However, I will tell you that wireless will definitely reduce your sound quality for streaming (whether it's internet or a local DLNA server).  Even though your wireless router/network can be high speed, it's the latency on the network packets that kills you and causes the streaming software to drop down to lower sample rates, etc.  Hard-wired Ethernet is always going to be superior.

Had exactly the opposite experience re: distance of router/modem when using Ethernet connection to streamer. Started out with r/m in laundry room far away from my listening room using new 75’ generic CAT6 cable from r/m to Aurender. Sound quality was meh and lots of dropouts listening to Tidal.

Moved r/m to listening room with 1 meter Purist Audio Ethernet cable and sound quality was night and day better. Even when using a 1 meter generic CAT7 Ethernet cable the sound was n&d better than the long Ethernet cable, just not as refined, clean, black and extended as with the PA cable.

Wallwart p/s and power cable from r/m was carefully isolated and plugged into completed isolated AC receptacle/circuit as I believe that Erik nailed it re: the power supply being the major source of noise.

Dave

I think it is true. You should try this.