I don't know. That's just what I did that made it work. And it worked.  ... View more

I know everyone is saying you verified resolutions, but I just went through this, so I'm going to say here what I did and you can see if that works for you. I'm not sure step one is necessary or not, but the gist is you have to uncheck the optimize for fast web view option when you export. The idea is to make sure it's not optimizing at all, not for print... Now if you were doing an ebook, you might want to optimize. 1. I first changed my PDF settings in the Print (non In Design). File > Print > Set up > OK (for warning about presets) > Preferences > Default Settings to Press Quality in dropdown > Edit > changed resolution from 2400 dpi to 3000 dpi > OK >  saved the preset... From here you can cancel the rest out because it won't work with just that. But it created a nice preset to adjust to better dpi. 2. File > Export > Chose a file name > Dropdown to my new preset on the top by Adobe PDF presets > in General Tab under options, uncheck "optimize for fast web view" > Export ... View more