High-DPI support in Cubase? (HiDPI, Retina, scaling GUI)

Thanks for the screenshot, fretthefret.
As expected, Cubase 9 is blurry at Windows zoom of more than 100% (looks like your zoom is 175%).

To see blur more clearly, compare your screenshot:

with how a HiDPI version of Cubase could look at 200% (below is a simulated screenshot I’ve created just for fun):

I recommend to save images and view those with a standalone image viewer at zoom of exactly 100% to prevent extra blur introduced by browser-level or viewer-level scaling.