Same. I found that my neighbours were swamping my signal in the outer rooms of my (small) flat and did the booster thing, a couple of ethernet-over-power wifi routers: TP-Link TL-WPA8631Ps
They were a breeze to set up, pushbutton if you just want to use the same SSID/password as your ISP router. I have this set up to serve the 5GHz on a different SSID tho - that stops my laptop switching to 2.4 and terrible performance. I'd have done this on the ISP's router (a BT homehub) and just pushed the buttons, but since a recent firmware update, the homehub goes into a crashloop if you try this.
If you have coax wired through the house, I strongly recommend MoCa instead of powerline Ethernet. It works very well and doesn’t turn your house into a shortwave radio noise generator.
If it's any help, I used to use Devolo EoP devices, but I'm stopping. My 1930s house has crummy wiring and I was frequently having to power cycle them to get anything to work.
I've switched to using a TP-Link Deco M5 wi-fi mesh (and I've disabled the wi-fi on the router my internet provider supplied).
So far, no problems at all. They're much cheaper also.
https://www.tp-link.com/uk/home-networking/powerline/tl-wpa8...
They were a breeze to set up, pushbutton if you just want to use the same SSID/password as your ISP router. I have this set up to serve the 5GHz on a different SSID tho - that stops my laptop switching to 2.4 and terrible performance. I'd have done this on the ISP's router (a BT homehub) and just pushed the buttons, but since a recent firmware update, the homehub goes into a crashloop if you try this.