Netgear Nighthawk R8000 5GHz channel loses internet connection

When connecting to the 5GHz channel on my Nighthawk R8000 my devices will conenct to the internet for a while but the internet will suddenly stop working and the router will need to be rebooted again.  This doesn't happen when connecting to the 2.4Ghz signal and even though the 5Ghz channel isn't working if I switch my device to the 2.4Ghz channel it'll continue using the internet without any issues.

I have tried using the "Smart Control" option both off and on. And I have tried a number of different channels for both 5GHz-1 and 5GHz-2.

Thanks for any help.

Router Firmware: V1.0.3.4_1.1.2