Don't mess with the Professional Settings
Use SmartConnect
Use WPA2-Personal
Use 20 MHz on the 2.4 GHz with either a fixed channel of 1, 6 or 11 or Auto channel
Use 80 MHz on the 5 GHz with a fixed or Auto channel non DFS.
Let your clients and the router choose which band to connect to. You have a great modern router so let it do its job and enjoy the performance.
In my case, everything. lolMy thoughts here...
For Security - WPA2/3 is good if your fleet of devices accept it - most do...
It's much like the IPv4/v6 transition - some devices work, some don't - and those are the ones that should be top of the list for retirement...
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