Nighthawk AX3600 MK83 Mesh SUCKS!

I did end up finding the same solution in my head at about 2am : Ding-Ding : and disconnected everything on the router half of my modem and anything still connected to it on WiFi with auto connects off on any devices.. Roku, spouse' phone and laptop, etc. This resolved my issues after resets of both the modem and NightHawk router.  The interesting thing is that I had previousely turned off the WiFi of my modem/router device in anticipation and it shows as being turned off in the configuration but the radios are still showing and proving to be on.  I guess its possible that my Frontier modem default is WiFi always on regardless of what the toggle shows in the configuration.  Guess I must hide it or change its name or both.  Finally got to bed at ~3am with an exhausted grin after updating all firmware.

Thanks bunches Plemans for the correct response and I hope this helps others better appreciate their NightHawk Mesh systems.

I'd recommend Netgear throw in a yellow card in the retail box or similar to alert less savvy buyers about this potential conflict and basic steps to resolution.  I think half of the negative (usually 1 star) reviews arise from this very issue.  At the very least the support tech that helped me should have--after 90 minutes--arrived at the obvious solution before asking me to "simply" return the MK84 Mesh kit.