Oh, I thought it is for printing only… It looks much better now. But still there are some more things that are not affected by DPI settings.
On printscreens you can see difference between resolution settings:
1920x1080
3840x2160 DPI=96
3840x2160 DPI=200
But as I wrote, it looks much better now and I can work with that.
Thanks a lot,
Petr