Screen fonts of PDF document are not legible, no font rendering in Reader DC in Windows 10, how to fix it, Acrobat 9.5 reads the same document OK.

Dear All.

I got an update of Acrobat Reader, and it was installed as Acrobat Reader DC. Whichever document I open in Windows 10 on my Fujitsu laptop, the font rendering is horrible - the small print is not legible. The same document opened in old Acrobat 9.5 is viewed fine. Windows has an option to render fonts in grayscale so that the text is read fine. I have no other application giving the same problem.

I tried repair the installation and  look for the updates, but no success.

Regards

Marcin.