How do I switch from Wi-Fi to Ethernet cables?

You can use a Wi-Fi extender or a mesh system, plug extender or mesh node into the room where your system is located and run an Ethernet cable from the node to your streamer.  Works well. 

I hear ya, and on the surface it doesn’t make much sense but it works.  Many people here with $$$ streaming setups swear by them.  My guess is that hardwiring the stream prevents the streamer from having to use circuitry to process the Wi-Fi signal over the air, but that’s just a guess on my part.  The good news it’s not all that expensive (in audio terms anyway) to give it a shot and if it doesn’t provide significant improvements just return it.  And yes, I believe inserting a quality switch, optical connection, etc. between the node and streamer could yield further meaningful improvements, but I’m sure someone here who’s actually done this could chime in further with more direct specific info.  The one thing I’ve learned is that with streaming everything matters — and matters A LOT — so there are lots of ways to engineer in further improvements, which is at once exciting and daunting.  Just my $0.02 FWIW, and best of luck.

I have a multi hundred $ mesh system.  Finally I just ran a test cable across the room to compare wired with a generic ethernet cable to my wireless.  There was such a big difference that I left it across the room until I could run something more permanent.

@carlsbad2 That is very useful and valuable info Jerry.  Thanks!

Digital data transmission is basically an all or nothing proposition. If you don't have dropouts, hiccups, or pops during playback then the audio data is getting from point A to B intact.  There's no logical reason for the sound quality to be different whether you're using a wireless or wired connection.

@yage You’ve obviously very little experience with various streaming setups and have no idea what you’re talking about.  Go back to ASR where you’ll find many friends and disciples.