I am a book designer and have been using InDesign for years. Just upgraded to 17.1 and finding its exporting massive PDF of a simple text file (60 page novel - no images, no colour, no charts, no graphics...just black text on a white page). I cant get it below 18mb using 'Smallest File Size' which is ridiculous. Previously this would have been 1 to 2 mb. Can you fix this please?