NightHawk CAX 30 slows until Factory Reset or config restore

[akeele]

I have experienced this issue with this router since buying it at Costco in July 2021. My firmware is up-to-date with version 1.4.10.8. I do not have any special port forwarding or access control configured. This router does not support QoS configuration.

After initial setup, I get 350 - 500Mbps directly from the router over Xfinity that is provisioned for 400 Mbps. Within hours, the rate drops to 120 - 150 Mbps. This is consistent and repeatable.

I enabled Airtime Fairness. Nothing improved.

If I do a reboot, nothing is improved. This is consistent and repeatable.

If I do a hard factory reset, speed is temporarily restored in full. This is consistent and repeatable.

If I restore a backed-up configuration and then restore/overwrite + reboot, speed is temporarily restored in full. This is consistent and repeatable.

This router needs better firmware is all I can figure. I am not the only customer with this issue in this forum. I hope Netgear reads this post and will respond.

[FURRYe38]

For your future CAX needs, Netgear has set up a community forum specifically for the Orbi With Cable Modem products. Most of the people who watch that forum are more likely to have experience with Orbi with cable modem and know how to work it better than those of us who follow this router forum. Might be more likely to find someone who has a solution if the question is posted there:
https://community.netgear.com/t5/Orbi-with-Built-in-Cable-Modem/bd-p/en-home-orbi-cable

Please use this link to the main forum product list to review and choose where to make your posts. 
https://community.netgear.com/t5/NETGEAR-Forum/ct-p/en-netgear

Thank you.

[akeele]

You are recommending I post to a specialized Orbi forum described as "All things Cable Orbi, including updates, tips, & more" regarding my Nighthawk CAX30 cable modem?

[FURRYe38]

Sorry about that. I send you incorrect info. My bad. 

Please post here for support information regarding your CAX modem:

https://community.netgear.com/t5/Cable-Modems-Routers/bd-p/home-cable-modems-routers