Change the Status Monitor Polling Interval to 60 minutes.
Change the Client Session monitoring interval to 60 minutes and the Watched Clients / Watched WLCs intervals to 15 minutes.
Change Radio and Port Statistics polling interval to 60 minutes
Disable Rogue Devices by unchecking the box.
Change the Configuration Change interval to 60 minutes.
Set Radio Retransmit Rate to 50%. Retransmissions are a normal part of 802.11 operations. Typical retransmit rates range from 15-20%. By setting the alarm threshold to a rate consistent with significant service disruption (>=50%) you will reduce unnecessary alarms.