>> MorphOS seems to have some issues with Airport. [...]
>> Same problems occour more ore less on all Macs with Airport.

> I'm not running Airport any more. I have some WiFi 6 gear
> from ASUS in Mesh configuration.

"AirPort" in this case means the AirPort (Extreme) cards installed inside the PowerBook, Mac mini etc., not the AirPort (Extreme) routers.