A colleague recommended that I use AFDKO’s otfautohint tool to add hinting after exporting from Glyphs. We weren’t sure: does Glyphs already use this utility to autohint when exporting .otf files?
I’m also interested to know if there’s a difference between Glyphs 3 and Glyphs 4 in terms of autohinting .otf exports, since I haven’t migrated to Glyphs 4 yet.