@RMerlin or anyone!
Please i am OUT OF IDEAS!
I reput my old AC3200 and it runs smooth without any hitches. aargh!
I didnt have time last couple of weeks, but since you released 384.9 i decided to give the RT-AX88U another try.
I reset completely, upload firmware. Set all settings manually.
Wifi set , 5ghz below 52, i tried 44 48 and others.
explicit beamforming off airtime fairness off
QoS off
AiProtection off..
What comes down to is this. I can network and wifi on all devices. But whatever i try, the chromecast AND my plex server are NOT found.
The livingroom has a netgear poe switch with vlan. Default vlan never touched (works on ac3200).
the switch has default connections = tv, chromecast with ethernet, nintendo switch, sony soundsystem.
The network ip from the telenet router has 2 ips. one with 192.x.x.x and the other is 10.x.x.x (they set this only for their network and iptv !)
i set my main switch to 2 vlans, one is vlan 1 with all the ports for internal network 192 , one i created vlan 10 for 10.x.x.x both untagged
the strange thing is, as soon as i plug in the ax88u i get this error in the log and i cant figure it out what it is = i am almost sure it conflicts with something, and i suspect the chromecast.
and my plex server is not found on my ios devices.
But i can see and login on my fixed pc.
do you think it is still the router that is at fault?
see pictures. FYI i tried to disable .ac beamforming and MU-MIMO (linked) also.