I have used Indesign for years, usually full page layouts with .TIF images. In latest CC version (13.1 x 64) my layout
with 2 .PSDs and 1 .TIF linked, is making a HUGE .PDF, about 27 mb. The file page is 8x10.5 inches and the images
are each about 5x7 @300 ppi. My .PDFs were never this large, even with bigger photos linked in them.
If I just save the 1 .TIF as .JPG, then this file creates a .PDF of under 2 mb. Even though the 2 .PSDs (transparent backgrounds)
are not made into .JPG. All are CMYK.
I have tried various PDF settings, and also changed the Transparency Flattener settings, it seems to be only related to
1 5x7 @300 ppi .TIF placed at about 70% size, 1/4 of the page. This is so different from just last years output.
Any advice? Is it a bug ?