Help needed with ORBI issue

FW may not be the poroblem since you said you've gone thru all the versions and still continue to see problems. 

Did you try AP mode with the Orbi and your ISP router? 

Try AP mode with your NG router you have online now. 

Did you put the RBRs IP address it gets from the ISP router into the ISP routers DMZ? This would help with double NAT issues when you have two routers online the same line. 

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?

Try enabling Beamforming and MIMO(MIMO may or maynot be needed) and WMM. Under Advanced Tab/Advanced Settings/Wireless Settings

Try disabling the following and see:
Armor, Circle, Daisy Chain, Fast Roaming, IPv6 and Set 20/40Mhz Coexistence to 40Mhz only. Set Short preamble instead of Long preamble modes. Save settings and reboot the router and satellite(s).

Above suggestions working:
https://community.netgear.com/t5/Orbi/Throttling-Devices-RBK53/m-p/1858561/highlight/true#M81925
https://community.netgear.com/t5/Orbi/Orbi-model-RBR50-keeps-dropping-connection-during-Zoom-calls/m-p/1874136/highlight/true#M84647

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ajbacon wrote:

Bought a RBR50 Orbi AC3000 plus a RBS50 Orbi Satelite. Set up both according to instructions and both worked as expected, with a few performance issues. Did not maintain a record of the original FW installed. As the web interface suggested a system upgrade, clicked on it and got an upgrade to v2.5.1.8 both on the router and the satelite. The router wi-fi went into intermittent mode, coming and going every 10 or 20 seconds. The satelite just did not connect any more.  

I downgraded the firmware all the way to 1.4.0.16. Intermittent wi-fi continued on the router. Went up through all the versions of firmware, same results. I only managhed to pair the Satelite when I got back to v.2.5.1.8. Each time, I went through the lengthy process of resetting to factory default and reconfiguring everything. But what with an intermittent wi-fi, it was useless.

 

BTW, I do have an ISP router, whose wi-fi has been turned off. My optical fiber network ISP is 240 Mbps nominal (what with Covid-19, sometimes I get 2 to 5 Mbps nowadays). I do have double-NAT, since I need specific addresses on my home network (because I hav IOT devices which would be painful to re-address).

 

Have given up and gone back to my previous Router.

 

Shall wait until Netgear manages to produce a stable FW version for the RBR50/RBS50.

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