device is getting constantly disconnected and am seeing many clone networks of my 2.4 ghz channel. I suspect its a Deauth Attack from somewhere around my neighborhood.
Looks like someone is trying to get into your network.
Deauth attack is to force clients to reconnect (and collecting connection information while this happens)
Clone networks ... trying to get you as client to connect to their network by using the same name. Again collecting authentication information.
If they would succeed to guess the PSK, they would use your internet connection as uplink, connect you as client and do a lot of man-in-the-middle attacks on your traffic.
My suggestion: use at least PWA2/AES-CCM security. Disable PWA and disable TKIP.
Set management protection "required" and set Management Protection Key
Change the 2.4 SSID , and set it hidden. Being hidden does not prevent you from connecting, if you know (type in) the SSID.
Use the MT scan function, to find the other APs.
Use some "wifi analyzer" e.g. on Android smartphone to collect information on the other APs.
"Network Cell Info Lite" is another analyzer on Android.
Use "inSIDDer" on Windows PC to collect beacons from all AP around, and analyse with Wireshark.
Use MT built in "Wireless Sniffer" to collect all beacons, and analyse with Wireshark
Some brands do have an option to attack a Rogue AP on your network. (e.g. Fortinet). You could be the target of such action.
Counter attack ? Well your MT lets you create 200+ SSID on one radio that lead nowhere. You have 200+ words to send to your neighbor.
. That would consume all airtime for that channel.
But just one visible SSID (e.g. with the current name) could already trick the attacker in aiming at this fake SSID.
The fake SSID have different security from your real hidden SSID, for sure. Maybe simple password, lower security like WEP, "none" security, whatever .. to keep them busy or happy.