Ok, so I am Nuendo 10 user, but I think the problem might be the same in Cubase.
I have scaling issues with HiDPI.
My main screen is 24", 1920x1200, windows 100% scale.
My secondary screen is 50" 4K TV, with default 200% windows scaling.
No option is really working for me:
1)
- HiDPI turned off
- my standard windows scaling set as above (100% on main, 200% on secondary)
- secondary screen (50" 4K TV) is used as video preview
What happens? When the secondary screen is used, GUI on the main screen fails to work: menus don’t work, toolbox sometimes fails to works properly (example: can’t choose color for track/whatever). To have it functional, I have set a special Workspace with no secondary screen used.
But that’s a pain in the ass to change it every now and then, and usually the timeline viewing settings vary between before and after changing the workspace.
2)
- HiDPI turned ON
- my standard windows scaling set as above (100% on main, 200% on secondary)
- secondary screen (50" 4K TV) is used as video preview
What happens? Well, the GUI issues are no more - everything works smoothly. But the video is ZOOMED, because my secondary screen has windows 300% scaling.
So whenever I want to work with HiDPI enabled, I have to change my windows scaling on secondary screen to 200%, to avoid the video being zoomed.
Currently I prefer to pick the second option, as it is less inconvenient than jumping between Workspaces.
However, I would suggest adding ZOOM/SCALE option to video preview RPM settings (plus add them to fullscreen mode of video), as currently the only thing you can change is the window size and aspect ratio.
Then I could keep my standard, default windows scaling and have everything up and running in Nuendo/Cubase.