I suspect the OP lives in a country where house power wiring is a bit shakey. In the UK I have had very few problems with powerline one failed through over he

I suspect the OP lives in a country where house power wiring is a bit shakey. In the UK I have had very few problems with powerline one failed through over heating and had an issue when we had our solar panels installed as the POS Netgear router didn't implement STP and we had a broadcast storm