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RBR850 + RBS850 Satellites: Terrible Performance & Stability
Previous setup: Modem Technicolor C2000T (CenturyLink) ISP Speed 1Gb Wireless 3 Apple Airports, all 3 plugged into walled ethernet. Performace was flawless across a two story, 3500 sq ft house, b...
What Firmware version is currently loaded?
What mode is your modem/router working in? Your ISP Modem already has a built in router and wifi. This would be a double NAT (two router) condition which isn't recommended. https://kb.netgear.com/30186/What-is-Double-NAT
https://kb.netgear.com/30187/How-to-fix-issues-with-Double-NAT
Couple of options,
1. Configure the modem for transparent bridge or modem only mode. Then use the Orbi router in router mode. You'll need to contact the ISP for help and information in regards to the modem being bridged correctly.
2. If you can't bridge the modem, disable ALL wifi radios on the modem, configure the modems DMZ/ExposedHost or IP Pass-Through for the IP address the Orbi router gets from the modem. Then you can use the Orbi router in Router mode.
3. Or disable all wifi radios on the modem and connect the Orbi router to the modem, configure AP mode on the Orbi router. https://kb.netgear.com/31218/How-do-I-configure-my-Orbi-router-to-act-as-an-access-point and https://www.youtube.com/watch?v=H7LOcJ8GdDo&app=desktop
How are you speed testing? With a wireless or wired device?
What is the size of your home? Sq Ft?
What is the distance between the router and satellite(s)? 30 feet or more is recommended in between RBR and RBS to begin with depending upon building materials when wirelessly connected.
https://kb.netgear.com/31029/Where-should-I-place-my-Orbi-satellite
Any Wifi Neighbors near by? If so, how many?
You can find other speed diagnosis steps in the community faq: https://community.netgear.com/t5/Orbi-AX/Community-FAQ-My-Orbi-speeds-are-slow-inconsistent-and-don-t-my/m-p/1982974/highlight/true#M7849
That reply is copy/pasted from every post on this same topic, and as I said, I've been through those. The firmware is irrelevant unless there is an actually documented bug fix on a specific firmware version. i.e. firmware 3.128 fixes ethernet connection issues. It is the lastest firmware available to the device at the time of posting.
Unless you live on a middle-of-nowhere farm, there are neighbors on wifi, and as previously mentioned in the original post, all the different channel options have already been tried. The system is expected to work reliably, like the Apple Airport did, regardless of the strangers that live in my neighborhood. Otherwise there would be a giant sticker on the box that says, "does not work in new york city."
The modem is already in modem only ode with the RBR in router mode. There are no other wifi antennas trying to control wifi traffic in the house.
Everything else is in the Netgear documention and knowledge base, so it doesn't help; it's been tried or taken into account, i.e. square footage and the coverage of each unit.
well if your not going to give feed back to the questions presented then might be time to return the Orbi AX and find something that works for you.
Good Luck.I have been able to gather additional patterns.
Using the status monitor for the c2000t modem, I found that the direct connection between the RBR850 and the modem drops to 100Mbps.
Running a speed test via the Orbi interface returns the connection between modem and the RBR to 1,000Mbps. It stay at this speed for a while and then drops down to 100Mbps again until I run another speed test.
IMPORTANT:
The ethernet ports on the modem have been tested, tested, and tested again. They are not the problem.
The ports on the modem are auto-sensing, so there is something on the RBR850 that eventually "tells" the modem its maximum speed is only 100Mbps.
The cable is not the issue; it has been tested multiple times using other hardware.
The modem is not the issue; again, it never had this problem with the previous wifi, and I have tested all the ports using other devices. Speeds nevers drops below 700Mbps.
It is ONLY the RBR85o that drops the speed between itself and the modem. I don't know why running a speed test would reset the RBR's port to full speed for a while.