Netgear R8000: Wireless Radios Keep Failing

My wireless radios seem to intermittently fail for reasons I don't understand, and the only way to get them to come back up is to reboot the router. Next time it happens, I'll post the build log, but for now, does anyone know why such a thing would happen, and how I can fix it so that I don't have to teach my parents how to reboot the router?

I am running LEDE Reboot SNAPSHOT r4696-df3295f / LuCI Master (git-17.225.68218-09e0519).