On both wired and wireless connections, everything just drops... No discernible cause known. PC could be asleep, I could be in the kitchen and decide to check my phone, it's loading slow.. oh and because there's no WiFI network. Check girlfriends phone same thing, no wifi. Could be playing a few matches of Rocket League, talking with a friend in Discord and then bam dropped from game, dropped from VoIP and phone is stuttering to get back to cell network so I can tell my friend my internet went out.
Reset the modem/router combo, including factory reset pushing the pin. Tried to make it crash playing some games, but it's fine. Start browsing the web and closing things down for the night, bam network vanishes, this is over a wired Ethernet connection by the way. Cellphones also lose their wifi connections and the TV playing netflix loses the connection. Everything is gone for a few minutes until the modem recovers and restarts.
I've tried all sorts of things and I'm running out of ideas. What could cause my router to spontaneously disconnect, both wired and wireless, and how can I trouble shoot and fix this?
I'm in contact with the ISP and they are sending a technician but I want to cover my bases so they don't just swap the hardware and assume it's fixed again.