Below is some text that is distorted when I open this PDF in adobe acrobat. The text fine in Indesign and the PDF is fine at 100% or zoomed in. However, it's zoom out it looks a little distorted.
I don't see distortion, though the top of letters don't align well. If you are outlining text, DON'T DO THAT. Otherwise, please share (1) the PDF (2) a view of the "good" file and tell us exactly where to look for distortion.