Is there ANY update on this? Unfortunately I didn't get any feedback from DisplayLink, my logfiles were simply ignored.
At the moment, I simply stopped using the laptop on the D6000. While the peformance problems were solved by activating the internal display under Ubuntu LTS 20.04, the display still disconnects from time to time.
Even worse, sometimes I am simply logged out of my X session and I lose all unsaved work. Because of that, I simply stopped using the Docking Station.