Actually, some GUI elements seem not to load properly in regard to the HiDPI setting, or, are simply only existing as “low-res” files.
The following images proves it. Resolution is 1440p at +50% HiDPI.
(please watch it on a computer, not on a smartphone)
The Control Room gain controls, VU meters overlays, M-S-R-W buttons in the toolbar, some old knob models, bypass/edit/arrow buttons in the inserts, EQ overlay (numbers), and probably some others that I missed, look blurry/pixelated.
However there are some differences depending on the HiDPI setting.
If we set it to +25% instead of +50%, every toolbar icons (except for the undo/redo arrows that are still sharp), the cogwheel buttons, and the edit e buttons for channel settings, all become blurry, though they weren’t at +50% setting… How confusing is that ? Every other elements remain blurry regardless of the HiDPI setting.
So, this really proves that Cubase doesn’t properly load the right assets for the corresponding HiDPI setting !
This is then a real programming issue that originates from Cubase itself.