I made an account just to add this feedback. I found this issue myself when using the D6000 dock after updating the drivers/firmware for macOS Catalina.
I was able to resolve the 90 degree rotation lag by doing the following:
- Update the Dock Firmware on a Windows Machine ( Yay for bootcamp )
- Uninstall the DisplayLink Drivers
- Reboot
Guess what. The DisplayLink Drivers are not needed for this dock in macOS Catalina for it to properly detect and display on external monitors. Good thing too cause they seem to be garbage and DisplayLink has 0 interest in resolving this simple bug.