I've been using Lyx recently, and I've been noticing that the produced pdfs scroll very slowly in Preview, particularly on pages with a lot of text, but it is still noticeable otherwise, even on very small documents. This does not appear to happen when viewing other pdf files, even those I believe may have been produced using tex. My gut feeling is that it is something to do with my choice of Computer Modern as my font which is not a Mac OS system font.
Anyone seen this before or have any ideas?
Best Answer
The problem seems to be in the fact that you use T1 font encoding for output and that they are rendered as bitmap fonts which print decently (usually they are produced for a 600 dpi printer), but slow down PDF viewers.
Install the whole MacTeX, as with BasicTeX you don't get outline fonts for T1 encoded Computer Modern fonts (actually European Modern).
You might switch to Latin Modern fonts:
\usepackage{lmodern}would be the command for LaTeX, adapt it to LyX.However, installing MacTeX is better anyway: you don't have to worry about missing packages. It installs also TeX Live Utility, with which updating TeX Live is quite easy.