Glad you’re getting better results now! I don’t think the font is the problem, but you can experiment with other fonts and see if they turn out better.
Interesting that a different PDF project prints out clearer. If you zoom that one in to 1200% does the text look sharp, or pixelated? I still have a hunch that your tract is not as sharp as it should be because it’s getting rasterized. But without being able to run my own tests it’s kinda hard to troubleshoot.
Are you applying any kind of “effect” to the text? Any overlays or gradients? The test PDF you posted earlier clearly shows that PS can export a clean PDF file, so we just have to figure out why it isn’t in this case.
The reason you’re seeing little dots on the paper is because you’re using a laser printer. It can only print one color (pure black) so any other shade of grey has to be made “lighter” by spacing the black dots further apart to make them look not so black, if that makes sense. You can see the same thing happening in the other prints to a lesser extent.
Oh, what color is your text? If it’s not pure black, try changing it to pure black and see if that makes a difference.