I have a setup of 9 1522 APs. RAPs=3 and MAPS=6 WLC=4404 Qty 1 (v5.2). All the MAPS have only one hop to nearest RAP. The problem is with one of the MAPs. The MAP shows good signal strength but the client traffic (even ping to controller management interface)is very disruptive. I have checked user experience with its parent AP and everything works fine. Also the MAP is only 400 feet away from the parent RAP and the SNR of backhaul from child AP to the parent is also fine.
Please suggest what could be the possible reason for poor client traffic.