Nighthawk Mesh Wifi 6 Router MR60 losing connection to 2.4 devices

ALL, I have ben working with NetGear Support for the past 6 months with inproving success.  I have been through severa Beta software trials and provided feedback at each level. I was in the middle of trying to recreate the issue and a Beta version but was not having success. The latest production release came out, I upgraded and again with this version I cannot create the issue.  My throughput is still very high. The only devices that are still misbehaving are a pair of older Samsung SmartCam's that I still use for internal monitoring of my pets.  These are old and I will replace in the next year.  No vulnerability updates from the vendor on the cameras.  Other monitoring cameras would well.  I believe this continuously try to reconnect to reach back to Samsung via UPNP, which I have blocks.  I utilze the VPN features on the router to connect back into my network to monitor Blue Iris when I am out.  Much safer solution than broadcasting UPNP Video on the internet.  I worked extensively with NetGear Support during this period and would like to give a shout out to Eahl in the suport team.  He was very helpful, thorough, and followed up better than most companies I deal with. 

Thanks

Christian_R thanks for the connection to the support team after my initial post.  I did subscribe to Pro Support and definately worth it.