It’s just the immediate solution, get a bigger monitor. If you are going to wait for Cubase and plugins to scale the way you want, it could be a long wait.
Windows 10 is slowly catching up to OS X, there are still years before full scaleable programs are going to be the norm.
Why not spare yourself the aggravation and change your setup to something that is nice to work on.
A 50” or bigger 4K TV at 200% might be the ticket if you got room for it, just as a practical example.
Learning a new DAW, would personally be my last resort.
I do hope the scaling problems on Windows systems will get fixed sooner than later!!!