Dear Technical Admin and friends .. i know this should be a quite straight forward deployment. But somehow or rather once the wireless controller which is using ver 5.3 firmware cause some rather high CPU usage at my core switch. i'm using only 1 uplink and downlink connection. At first i though it might be cause of the number of APS but i connect only 2 APs and the timing of occurance is not specific , it can be at 1am GMT +8 or sometimes 7pm GMT +8. I'm at lost on how to proceed.