Just bought and installed Dusk.
Started game - main menu: the cursor flickers and keeps returning to centre (I can move it but its jumping around and snapping back to centre all the time, so I can't even select an option.

Any ideas?

Mouse is logitech g500, nop issues in any other GOG game ,.??

Sort of fixed it.
After unpluggin all my USB controller etc, and plugging them back and messing about.. I gotmouse working ok.
Eventually narrowed it down to my xbox one controller. If it was switch off and inactive, I got weird mouse behaviour,
if I turn the xbox controller on,then run Dusk, mouse works fine!
(controller is bluetooth, I have a bluetooth dongle plugged into USB)

No idea what is going on but something to do with the computer maybe reporting there is a xbox controller, but not plugged in casuing weird behaviour.

Now I can play Dusk - seems very fast running and turning! Not sure my head is ready for this speed!