I noticed the other day I had a number of devices connecting at 2.4Gbps. Days later possibly after a reboot they were connecting at 1.2Gbps. I found if I change the 5ghz channel sometimes these will connect again at 2.4Gbps but not always. I have the 2.4 radio disabled and I need to use non DFS channels. Any better idea what the issue is with maintaining 2.4Gbps connections.