I moved AP to another building and it started working perfectly with another client group. I investigated the previous building and found a client device that affects on the stability of AP. It was...

@Philbert 1. Enabled AirTime Fairness didn't change anything in this case. 2. As I wrote before the location is a private house and I don't have any 2.4GHz networks around. 3. I set the channel width...

Location: Private House Installation: On the first-floor wall in the center of the building Channels crowd: any other wifi 2.4GHz in wifi analyzer app on Android Clients: <10 devices Device state:...