Orbi RBR50 disconnects from FIOS internet

[masteraleph]

I've been having an issue where my Orbi system loses its internet connection, sometimes once a day, sometimes every few days, occasionally even multiple times on the same day.  This gets fixed if I restart the router, and the internet light on the FIOS ONT never seems to change.  As far as I can tell, the only Verizon device that I have is labeled as I-211M-L, which I think is an ONT only (possible that it's also a router, but it doesn't seem like it?)  Is there a way to stop this?

Orbi is on 2.3.5.30 firmware.

[FURRYe38]

happens with both wireless and wired devices? 

Can you access the RBRs web page when this happens to check the status? 

What is the size of your home? Sq Ft?
What is the distance between the router and satellite(s)? 30 feet is recommended in between RBR and RBS to begin with depending upon building materials when wirelessly connected. https://kb.netgear.com/000036466/How-far-should-I-place-my-Orbi-satellite-from-my-Orbi-router

What channels are you using? Auto? Try setting manual channel 1, 6 or 11 on 2.4Ghz and any unused channel on 5Ghz.
Any Wifi Neighbors near by? If so, how many?

Has a factory reset and setup from scratch been performed since last FW update? 

ALso power OFF The ONT system for 1 minute then back on. 

Your ONT is just an ONT, no router built in.