I used powerline adapters for a few years and don’t recommend going that route. I ultimately bit the bullet and paid someone to Ethernet wire the home ( and simultaneously install an antenna for OTA TV signals, as both of these required going deep in my attic and was beyond my physical abilities to do so).
Coincidentally I had to interrupt the Ethernet connection for one of my VXN streamers and go WiFi (I was painting where the room where the Ethernet comes out of a wall). I thought that the WiFi connection was a tick sonically below the wired connection.
The OP was prepared to spend a chunk on a new streamer, I think in the 8 K range. For a fraction of that he can pay for a first class Ethernet setup. I think that it will make his current streamer a bit better, and if he ever decides that he really needs a component that requires hardwire, he is all set to go
