Homeplugs (ethernet over power) are fine for some things, but they add so much latency to the network.
Wired is so much better.
When I first found them, I took was amazed you could use mains wiring to network. I used them to get internet on the second floor on the opposite side of the house, worked great at the time.
They worked here on a single ring, but crossing 2 consumer units seems to have killed it