I have a six-week-old TP-Link Archer C1200 router. The past few days I've had issues with the 5GHZ network just cutting out. The 2.4 network continues working, but the 5GHZ network just goes away completely. My smart devices show they aren't connected, and it doesn't appear in the network list on my phones or computers. When I go to the config page, it doesn't show anything out of the ordinary. When I turn off WiFi broadcasting on the router and turn it back on, it works again for a while, but not for long. It was already on the latest version of firmware, but I refreshed it anyway. It's still doing the same thing.
I'm an IT Technician, so I'm somewhat knowledgable here, but I'm just trying to see if there's anything else I can try before getting it replaced.