RBR50 - Have You Installed V2.7.2.104

I'm having some issues that seemd to occur post firmware update.  Where I manually initiated an update thru the Orbi Web GUI interface (not the app).  However I'm not sure if my issue is coincidiental, or if it is related to my v102 to v104 firmware update.  It's also worth mentioning that I didn't notice the issue until about a week after my upgrade (not to say that it wasn't there, just that was the first I noticed).  Thus I'm posting here just to see if anyone else has run into something like this.

My issue:  For the past couple of weeks when I get up in the morning I find my devices reporting no internet.  Sometimes this is just a few devices (mix of wired and wireless), and other times it is all devices.  And twice this has happened in the middle of the day.  While troubleshooting, I've discoverd that it's often (but not always) that the impacted devices don't have DNS.  More specidifaclly those devices can ping out to a static IP address like 8.8.8.8, but they are unable to resolve a websites host name such as google, yahoo, espn, etc...  If I disconnect and reconnect an impacted device, or renewing it's dhcp, that seems to have no impact on the symptoms.  Howver most of the time I can log into the router's admin console using the IP address, go to the advanced tab, go to setup, and then go to internet setup.  On the top of that page there is a button labeled Test.  If I click on the test button, more often then not all my devices start working again.  Sometimes I get a 404 error that the router can't get out to the internet, in which case I then reboot the Orbi router and everything starts working again.  

I know that this is not an internet issue, as my network is a Motorola SBG6580 cable modem / router (wifi completely disabled), with the Orbi RBR50 (running primary and guest wifi networks) connected to one of the Motorola's 4 ethernet ports, and then a Netgear GSS116E switch (for most of my wired connections) connected to one of the Orbi router's 4 ethernet ports. 

When the issue is occuring I can log into the Motorola's admin interface and test my internet connectivity.  Additionally I can directly connect a laptop to the Motorola SBG6580's ethernet port and see that I get DNS via DHCP... and that I can again connect to the internet and resolve hostnames for internet sites.  Finally I can log into the orbi and see that it has a static IP configured on it's WAN interface along with staticly defined DNS servers (such as google's 8.8.8.8).  But again a wired or wireless device chained off the Orbi router or Orbi satallite, doesn't resolve hostnames due to missing DNS servers... unless the device in question had statically configured dns servers.

Anyhow due to the frequencly of the issue, I'm considering trying to reset the ORBI to stock and then reconfigure it from scratch... Just to see if that makes the issue go away, as some people in this thread mentioned that seems to get rid of ghosts in the system.

Thanks for reading this lengthy post and any comments you might provide,
jschaff