Same, I have two powerline APs that deliver ethernet+wifi, more than enough for chromecast/netflix/etc. The only issue i have is sometimes clients don't choose the best APs.
Counterintuitive, but try turning the transmit power down on your APs - it’ll reduce the intersection without compromising signal quality where you actually want it. I used to almost reflexively turn them all up to full, but that, it turns out, is a fool’s errand.