It would be more clean and simple to use mesh system. Having said that, there is always debate between mesh and AP mode for the last few years. It all depend on your environment, distances and need. I am still wondering.
I have figured out a solution that has solved my problems.
I have not had a LAN disconnect now for 30 days.
Go to "Wireless" -> General-> Authentication Method and select "WP2/WPA3-Personal"
Go to "Wireless" -> General-> Channel bandwidth and select "20/40 MHz"
I also updated to 126.96.36.199.386_46065 a few days ago and I'm still doing good.
46065 crashes for me but may try your solution..............
i have been experiencing the same exact issues as @crystalpup . i have 2 GT-AX11000 routers. one is my main router, the other is set to AP mode. i'm not using AI Mesh. the two routers are connected with CAT6 ethernet. my internet was dropping out every 5 days or so, and a reboot would restore everything. it started happening once i switched internet providers from Spectrum to AT&T Fios. the new Fios modem operates differently and i think it messes things up somehow.
my solution has been to set up a daily reboot of the routers (both of them) every night at 4am. my internet will still drop out from time to time, but not as frequently now. every 15 days maybe?
i also just recently enabled Dual WAN with auto network detection. i think that may help as well, but it's too soon to tell. in theory, if the internet drops out, the secondary connection should kick in after 60 seconds.
also... you could try changing your DHCP query setting. read this FAQ. not sure if it'll make any difference but might be worth a try. [Wireless Router] What is DHCP continuous mode? When should I use it? | Official Support | ASUS Glob...