Bought AX3600.
Noticed that with a single device connected to 2.4G wifi, the speed is awesome.
Ping from PC to router 192.168.31.1 less than 1ms.

After I connect all my IoT and IP Cam (~10 devices) which supports only 2.4G wifi, ping from PC become ~600ms and frequently disconnected.

However, if I connect my PC to 5G wifi, it's smooth again.
But I can't connect to 5G wifi with my phone as it doesn't cover every corner in my house (such as toilet) :|

Is this the slow 2.4G wifi a common issue for AX3600?
Even with my very old TL-WR740N, it can easily handle more than 10 devices without hiccup...

Both has been done, but still the same issue.
I suspect it might be caused by interference as it was placed very near to NVR and there are another router on another side of the wall in neighbour's house.
I tried to relocate router and NVR away from the wall, it runs smoothly. Now monitoring.


Thanks! This might one of the possible cause. Since I already own AX3600, i might get another AX1800 as wifi mesh too.