Could not find a proper answer for my problem, hence this question.
I use Studio One 4.1.1 Professional and all Native Instruments Kontakt 5 & 6 Windows appear
with very small fonts. (I have a 4K Dell monitor and Windows 10 Pro v. 1809).
The DPI scaling option in S1 blows up the screen, but only half of the Kontakt screen is visible.
Chosen Virtual Instrument active window is not visible.
How can I solve this problem?