I gave up on this AiMesh for a while too. This thread gave me hope, but the reboot problem shuts down this last hope. Oh well, back to none AiMesh again.
Thank you! This works for me. 2.4Ghz seems to give my devices trouble too.
However, the node refuses to reconnect after a reboot. It seems it needs 2.4GHz to initiate the connection. Does your router work fine after reboot?
That was also my experience. The internet seems to be disconnected for 2-3 minutes, then everything came back normal. I went back to .45708 and the problem went away.