Wifi dies about once a day, but wired connections are fine

I have an Archer C7. I have a PC connected to it via PC and 7 android phones connected via 2.4 GHz. About once a day, sometimes as long as once in two days, the wireless connection seems to just die. All android phones simultaneously lose connection and cannot "see" the network in the network browser. Power-cycling the router fixes it for a day or so. The ethernet connection does not have any issues.

Where should I start?

Submitted January 01, 2018 at 09:01AM by Nutshell38 http://ift.tt/2CnhdPh