I just recently started to have this problem. When I create a note and choose to have it underlined, the lineweight of the underline is very thick. Any ideas on where to adjust this?
It's controlled at the font level. Try using a different font or it could be the graphics. So make sure your are using the correct drivers and certified card.
If you do a print of file is the underline still think? If not then its just a graphic issue.