I am novice about the networks in general but have a good overall understanding. I am helping a small office to manage their network. We currently have 4 ap 121s with average 60 wireless devices per day. entire office uses business dropbox for data storage - no vpn, no bonjour gateway. we are experiencing some slowness which is given but I want to help them optimize the network. they were initially on both 2.4ghz & 5ghz. I have slowly closed own 2.4ghz. now i want to understand the different optimal settings in radio profiles to serve them better. Thank you.