Critical AiMesh connectivity issues on RT-AC68U <-> RP-AX56 after 3.0.0.4.386_51665 update

[Arctic Ace]

I have encountered critical AiMesh connectivity issues with Asus RT-AC68U and Asus RP-AX56 after latest RT-AC68U firmware update. After turning RP-AX56 on, AiMesh works few mins but after that connectivity disappears and led will turn from blue to red.

Current version:
RT-AC68U
3.0.0.4.386_51665

RP-AX56
3.0.0.4.386_42860

AiMesh configuration
Ethernet Backhaul Mode

How to fix issues the connectivity and stability issues?

Has anyone reported similar issues/bugs to Asus? Anyone got answers from Support?

 

[Poomba1]

For the RT-AC68U, I consider the "3.0.0.4.386_48262" as the last known stable firmware for my unit to be in AiMesh node mode connecting to a GT-AX11000 as the master. I saw your post from the other thread where I was also curious to others that have their 68U's in AIMesh node mode (I assume the other unit is the master node?).