I spent a bit of time playing with powerline adaptors (interestingly discovered that I could connect to the network of the house two doors down with them and access their network drive and Sonos) and range extenders but it was all a bit painful.
Powerline adapters weren't that fast, I had multiple wireless networks that I had to manually connect to, speed was still slow, etc. Eventually I ran a network cable through the wall to the room where my main PC was and installed one of these https://www.ubnt.com/unifi/unifi-ap-ac-lr/ for WiFi and the problem is now solved.
I spent a bit of time playing with powerline adaptors (interestingly discovered that I could connect to the network of the house two doors down with them and access their network drive and Sonos) and range extenders but it was all a bit painful.
Powerline adapters weren't that fast, I had multiple wireless networks that I had to manually connect to, speed was still slow, etc. Eventually I ran a network cable through the wall to the room where my main PC was and installed one of these https://www.ubnt.com/unifi/unifi-ap-ac-lr/ for WiFi and the problem is now solved.