Hi Daniel, thanks for sharing this.
This would likely be because the NCrunch UI is built on the old winforms system, which unfortunately never scales as nicely under high DPI as the newer WPF stuff.
I would recommend having a look at the NCrunch UI font settings, as you might find a font or point size that doesn't look as blurry and fits in a bit better with the rest of your VS UI.
Unfortunately to fix this problem properly we'd need to rebuild most of the NCrunch UI, which is not a small task (and is why this hasn't happened yet).