Okay, so I feel like an idiot. After fighting with this for nearly a day, come to find out that SOMEHOW, my camera system was the problem all along.

Not exactly sure how, but apparently it was causing some sort of network interference, causing WiFi disconnects and some other disruption. After playing with 2 different other router setups and monkeying with it for hours, a random decision to unplug the camera system from the network occurred with immediate results. After rebooting that, everything seems to have smoothed out!

I have since reconnected the AX6000 after completely restoring its configuration. Working fine now. Ugh! Still begs the question though. How could a simple 4 camera IP DVR based system hardwired to the network cause that kind of havoc?

  @Riley_S 

Interestingly enough, this has occurred once before, probably over a year ago.  But not to this degree. It was simply causing a network disruption in that you couldn't get to the internet that time.  I rebooted the system and went on till now.

The unit I'm using is one of probably a dozen cheap brands that use the XMeye app for the phone to access it.  To be honest, I hate their app, hate how it works (forced ads that you have to manually disable about once a month), even though as a basic camera app it works.  The brand of the system is Sannce.  Low tier, cheap, but they work usually.  This particular one has its own built in PoE LAN ports and assigns its own address scheme.  But been thinking about upgrading it, I have a nice GW DVR unit that was given to me not that long ago. Time to swap to it. I just have to reset it.  Anyway

I run a multi-layer network here.

My primary internet is Starlink. (gen 1, the round dish)  I am currently using its router, though I haven't in the past.  But its easier to use it to monitor its status.  However I do not use the WiFi features, just the ethernet port.

That is fed to a TP-Link ER-605 gateway.   That gateway in turn feeds 3 individual networks over the property. I use CPE-710s to bridge the property (the only CPEs I could find with 1GB ports), and have individual networks with their own unique IP schemes at each location. (one is my folks place, another is the house)

This building/office is the hub of this network.  The AX6000 is directly gated into that ER-605.  The other two networks use the CPEs to bridge the ER-605 to their respective routers.  They are using simpler routers, AX1200s.  I usually run the WiFi here at medium power, the office is small.

What's nice is, I can pull the full speed potential of the Starlink internet at any location on the property.  Up to and even over 300MB at times, no matter what network I'm on or building I'm in.  Which is great.

Everything that's in my office here, is connected under the AX6000, so the WiFi devices, the camera system, etc.  But its not a lot at one time. I think my folks have about twice the devices I do.  LOL

Anyway.

During all this non-sense I was dealing with, all of the other networks outside of the AX6000 were working perfectly fine. Which was good, as that was how I intended the network to behave.

Since that last update above, everything has been working just fine.  I'm just so mad at myself for not thinking of that being the cause, because it was SO weird.  It wasn't till I was tearing everything apart in frustration that I realized what the culprit was.

But once it was powered off and back on, no more problems.  What's weird is that I have most of the hardware set to automatically restart.  What sort of clued me in was that the camera system wasn't taking a new IP.  (not showing in the client list on any router), even though it was working on the screen and recording and appearing normal. To be honest, its running whatever default protocols it was set on and I didn't check that for you yet..  But as I said, it has its own internal network to the cameras using 23awg solid copper Cat 6e or was it 7? (the whole building is wired with it actually), and its IP is vastly different than what I set my AX6000 router to.  I try not to follow conventional IP structures too much.  Too easy for things to get weird or be guessable.

I was swapping cables, switches, routers, ugh.  And ALL of it was because of that dumb camera system.

If you don't know, I run a small computer shop, I install Starlink for people up here in the remote north of Michigan these days (have done around 30 of them), and am about the only local computer repair guy around that will actually go to the customer and fix things.  Been doing this stuff for over 30 years.

And even I get tripped up once in a while I guess.  LOL

Hope that helps.