Unfortunately my second device is already on the way back to Amazon Australia.

This occurred on HP 2570p and G850 G3 laptop under Ubuntu AND to a Huawei Mate 20 phone. (Laptops running Ubuntu 18.04 and 19.10)

This occurred with 500,1000 and 2000ma USB chargers

This occurred with 2 different ethernet cables.

This occurred with NO ethernet cable connected, NO wifi bridging / sharing.

I tried moving my personal wifi to channel 13 and the device to 1.
The device doesn’t just ‘drop’ wifi it STOPS BROADCASTING wifi - this is basically the wifi chip rebooting / turning off and on / overheating or the whole system. The SSID is 100% missing and un-available, even to my PS4 (see video #1 here AR750S drops out frequently, especially when initial connecting. - YouTube ) wifi is GONE / MISSING entirely.