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Orbi AX4200 on a Fiber vs Cable connection
As a new user to the community, I thought I would offer a comment and small question related to Orbi AX4200 on a Fiber vs Cable connection. I know most people are fortunate to even have one option f...
Run it for a while and see how it goes for you.
What was the Mfr and model of the cable modem you had been using when on Cable?
One issue will be the ATT modem/router. 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
The BGWs wifi radios are disabled correct?
Those Arris BGW210 modems are known to have problems with external routers like Orbi.
The cable modem was an XFi Advanced Gateway that comes from Xfinity. Yes, the Fiber modem WiFi is turned off. I wouldn't say I have an issue with the modem fortunately since the Orbi is getting full strength at the source with no problem and I should mention WiFi speeds are equally strong right next to the router. Its just that I get slightly less download from the Arris/Fiber as I get farther away from either the main router or Satellite. At long range the gap is around 20-25% difference. There actually may not be anything wrong at all if its true that the Orbi logic is just handling things differently in an attempt to optimize both up and down speeds.
Run it for a while and see how it goes for you.
In theory, at least, there should be absolutely no difference in performance between the two configurations with the exception of the fiber setup achieving better upload speeds.
Are you on the same firmware on the Orbi system that you were on when they were connected to the Xfinity gateway? There have been recent updates, so a change in the firmware could explain the differences.
Also, do you know what your CTS/RTS thresholds are set at? They should be at the high end, which if I recall correctly is 2347.