Thank you for sharing your experience with us @syracuse76 ! We’re here to help 
Great observations on the health check details, I recommend also checking DHCP lease renewal for the routers to see if there is any area of improvement there. Also, sometimes when a router is being requested resources to delegate to several devices at once, a network might experience some difficulties and misappropriate signal.
You’ve taken good steps to optimizing connection it sounds, I would take it one step further and connect your Base Station via Ethernet (if possible) for the most dependable connection. Please let us know how it goes!