Just recently got a RT-AC68U and things have been good so far. Today, the router dropped all clients (multiple iPhones and and iPad). The clients were unable to reconnect until the router was rebooted. I'm running the stock ASUS firmware, latest version 3.0.0.4.380_1031. All clients are on 5ghz band, not very distant and are probably 5-15m away from the router, through one wall or one floor. Have been getting great signal on all of them. Pretty much standard config except for adding some...
RT-AC68U dropped all wifi clients
RT-AC68U dropped all wifi clients