Hi Ruud,
Good to hear you're still good
If possible; can you also try to sometimes transfer large files using the dock's Ethernet port from your laptop while you're working to (if you have) a local server? To get the maximum speed, for instance take a 4GB dummy file.
I've never experienced a stable Ethernet connection. The transfers didn't complete.. While the black-out occurs the Ethernet connection was also reset... and the mapped network drives became unreachable... Very annoying...