Try disabling AX and AC mode. I switched to N mode and no issues so far (few power on / sleep wake ups). Screenshot attached. Will keep posting the status.
Good thing about external dongle issues - means that the problem is software, not hardware, so maybe after 3 years MS will fix that... Then we'll upgrade hardware and again ;)....
UPDATE: pls see my later post from 29th of March (few items below this one) as it permanently resolves the issue for me