I never had a satisfying experience with EOP but I finally discovered Ethernet over Coax. Since I installed them: reliable fast connections and no downtimes.

If you have coax plugs in the needed rooms, try that instead. (I went with bridges from Giga copper).

I have tried 3 brands of Ethernet over powerline, from 2013 through 2019, and they all broke down after about a year of continuous use. They start at 100Mb/s and gradually decreases to 100Kb/s.

Make sure it is a high speed rated one and past that good luck. It depends on what kind of wiring setup is hidden in your walls.

Wi-Fi might actually have higher peak speeds but even a repurposed/double duty wire setup like this is just so much more consistent assuming it works in the first place.

I have had good luck with a set I have that are gigabit rated (get about 280mbps in practice) across 4 different places I have lived however I temporarily pulled them so we could test at some friends apartments and one of them just didn't work at all so be aware that could happen and just have to return them.

In my use case I was unable to use powerline with 2 breaker panels, but MOCA over coaxial does work great.

At my dad's house, this technology is really slow, I do not recommend