Hi,
From your post i understand you tried a few AP clients (from a few vendors) - and it's seems happened with all of them (PC/LAPTOP connectivity are steady)
A. What encryption are u using?
A2.What is your vap working mode? (tunnel/bridge/split?)
B. what band are u using? (be sure to use 40mhz only in 5Ghz)
C.are u using WIP/RFP module?
D.Can u copy&paste from your cli/gui your aaa-profile/vap-profile/ssid-profile
give us some further technical info - in order for us to assist you.:smileyhappy:
Me.