Macbook pro clients dropping off wifi multiple times per day

I’m running a Balance One Core (firmware 6.3.3 b2526) with 6 AP One AC Mini devices (firmware 3.5.4 b1681) serving up the wifi. In one particular area of the office, I have Macbook pro users complain that their wifi is dropping multiple times per day. They can reconnect by disabling then reenabling wifi on their Macbooks.

I grabbed the client report and see the disconnects but no detail or reason.
Can you help me get to the bottom of this so I can return my clients to a stable wifi situation?