@natsbar 

Are all other wirless settings left defaulted, it is just the width and the channel that is changed?

@Tony 

No, the width doesn't change, just the channel. I was just explaining that I set the width to 80MHz.

I think the other wireless settings are the default settings, but I'm not sure.

One default thing I changed was that I forced the channel on the AX3000 instead of leaving it on Auto.

@Tony 

I'm home, and a couple of things have changed. It turns out that channel 100-112 is having the same problem. So far the only 80MHz wide DFS channel that is stable is 132-144. And that may change after a few days. I'll know if the router changes it to one of the non-DFS channels without changing it back to channel 140 (see below).

Here are my current settings if it helps:

Mode - 802.11a/n/ac/ax mixed

Channel Width - 80 MHz

Channel - 140(DFS)

Transmit Power - High

Airtime Fairness Feature - Disabled

Multi-User MIMO Feature - Enabled

Please tell me if you need any more information.

@natsbar 

Thank you for the detailed information, I'll forward that over to HQ as well as they continue to look at it.

@Tony 

Not to be too much of a pain, but the firmware says it's for the AX50. I understand that the AX50 is similar to the AX3000 I have, but I just want to make sure that it's ok to load the AX50 firmware on my AX3000 router.

@natsbar 

If you look at the sticker label below the router does the model number say AX3000 or AX50?

@Tony 

It says AX3000 on the bottom of the router and on the router's webpage.

@natsbar 

Thanks, I will check if it can be used. I want to be sure so you don't end up bricking your router.

@natsbar 

So the link for the AX50 should not be used.

Here is the link for the Archer AX3000 firmware: link

Note: This firmware is specifically for US region Archer AX3000 version 1

@Tony 

I installed the Beta. I'll give it about a week before I report back. Now that I've installed the beta, I have two other bugs that I see the new beta doesn't fix.

1. Under System Tools, the AX3000 really needs a reboot schedule (just like the AX6000)

2. Under System Tools, the AX3000 really needs a LED control (just like the AX6000)

Can you send these requests to the developers?