Whenever I print anything directly from InDesign CC (2016 and 2017), fonts appear unnaturally bold and almost fuzzy. If I export to a PDF and print, the fonts look as expected. Is there a setting that is causing this to happen? This happens on all pages, regardless of content or font.
Printing from InDesign on the left, printing from exported PDF on the right
Sounds like you may have InDesign treating your blacks as rich black.
Go to: Preferences > Appearance of Black and set 'Printing/Exporting' to 'Output all blacks accurately'.
This is a sneaky one that is set to rich black by default.