It's not about you doing everything I can think of (and I would do many of the things you list, btw).
It's about doing things in a proper sequence and doing them all together. And not repeatedly doing things you know don't work (see the 'toggling' part of my post above).
The network is a unique combination of your router, firmware, environment, client devices, drivers/OS, and your expectations too. Not everything will work everywhere for everyone.
Be methodical, take good notes, and tune the router/network to your particular needs. And don't continue to play with it afterward.
And if you do want to experiment, do the following so that you can at least get to a good/known state quickly
I have had issues in the past when updating firmware and Internet speed, But it may have just been a fluke, Should I keep up with the updates? If so On all routers or the nodes as well? What about ones acting as access points? Thanks
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Those are indeed great tips for people who are new to this. I'm not, but I lack the time to elaborate stuff well when writing in forums and whatnot, so I guess I come across as inexperienced when you read that at first.
My use-case is quite basic. I only have a handful of WiFi devices and my only requirement is getting a stable and fast connection on them for regular usage. Nothing too crazy. My serious networking usage is all cabled.
The XD6 nodes I have are only acting as bridges. They don't even run in router mode or with anything extra enabled.
My notes basically boil down to each configuration I tried (and back when I first got the XD6, being my first WiFi 6 mesh system, I tried a bunch of new things, like MU-MIMO, WPA3, some airtime fairness options, etc.) and each firmware update since I got it.
And, of course, I started fully clean each time.
I don't have time to write everything down, but I was as methodical as my free time allows me to (plus receiving complains from other people in the house about instability and whatnot).
So far, my notes boil down to:
* 3.0.0.4.386 serie is the last good one. All after that have been bad. I've had the most luck (maybe by chance?) with 3.0.0.4.386.46216. Later ones do work, but some devices have weird connectivity issues when roaming.
* The only WiFi options that are safe to change are:
* Network name & Password
* Security (but not WPA3)
* 2.4GHz channel
* 5GHz channel (but not 160MHz width, later firmwares have a hard time with DFS)
* Disabling WPS, setting a reboot schedule, and setting it to wired-only backhaul is also safe.
I don't have that much time to spent tinkering, but I hoped I could enable some of its features without major problems, at least.
At least with those settings it mostly works.
