iPhone not staying connected at 5Ghz

I have a 2,000 sq ft town home and the RBR50 without satellites works great. I've used the satellite solution at our church so i'm familiar with successfully installing Orbi.

I feel this solution is the greatest and simplest for most consumers to implement But one thing i find is if i move far enough away from the router and it switches to 2.4 Ghz to maintain the wifi connection, when i move back closer to the router it doesn't "always" switch back to the 5GHz band. I can determine this by running a speed test on my iPhone and i can see that the connection is "stuck" at the lower speed 2.4GHz. If i re-boot the router, then everything goes back to normal just fine.

I hope Netgear is reading these forums becasue this is probably a bug that can easily be fixed. Besides this, the platform works as advertised and very well. I just like not having to select a specific 2.4 or 5 GHz SSID and have it all done automatically for me depending on my device and wifi location in the house.