I just updated OpenLP to the most recent version, and the screen font size for the program doubled in size, making it unreadable. With a bit of digging, I figured out that my computer, a Windows Surface tablet, has a system setting that increases app font sizes by 200%.
So to fix the font problem in OpenLP:
- right click the OpenLP icon on your desktop (or in the Programs/OpenLP folder if the app does not have a desktop icon),
- select "Properties",
- select "Compatibility" tab,
- click "Change high DPI settings",
- check the box "Override high DPI scaling behaviour"
- and then in the dropdown box, select "System".
For me, that solved the large font problem.