Catalina: Rotated monitor laggy (5.2.4), Clamshell not working on beta

[bogehaven]

I am running into some issues using the D6000 dock with my macbook pro.

on 5.2.1:
I have two displays hooked up via Displayport. The monitor in landscape works as expected, but the rotated monitor in landscape mode is extremely laggy. Any window i drag to the landscape monitor runs at about 5 fps.

Beta 0.5:
Dock still detects macbook display when i close the lid.
Can't change rotation of monitor in settings. I tried using Cmd + option when opening the display settings, but the option is still not available, even after completely closing down the settings.