My devices :-

2.4G = 4 ip cameras + 30 iot devices

5G = 2 TV + 1 phone + 1 notebook

6G = 1 phone + 1 notebook

 After a week of switch from AX73 to BE800 :-

5G & 6G = good wifi range and speed.

But 2.4G = unstable

iot devices randomly reconnected and speed dropped.

ip cameras have jerky pictures and dropped frame.

This did not happened to my old Tp-Link AX73 router.

Fixed channel of 2.4 = not help

Downgrade fw from 1.0.12 to 1.0.9 = not help.

There is no risk of head and power supply of the BE800.