Hi Steve,
I'm afraid I can't help you further.
Having read many threads about this it seems that especially Windows 11 doesn't always install a good ethernet driver itself. My solution works voor all Realtek ethernet adapters, don't know about Asix or which driver you should get for those. I know people had the same problem with different docks (mine was a M-teck) and most use Realtek.
Good luck!
Kind regards,
Mike