I know this has been asked a lot but I can't figure out what is happening on my system. Compiling even trivial documents (see below) taking upwards of 20 seconds to load, and I remember on my machine 15 years ago compilation of 10 pages of text was more or less instantaneous. In watching to .log file run it seems like all the time is taken up by loading all the fonts, .sty files etc. Shouldn't that just be running once, and not every time I recompile? Here's my mwe:
\documentclass{article}
\input{../preamble.tex}
\begin{document}
This is a test
\end{document}
This takes 20 seconds to run. I am using texshop on an otherwise very fast 2020 Mac. I can post my preamble, but it's just a number of reasonable packages. (I can link to my .log file: here Any thoughts? At the moment it's unbearable to be waiting 20 seconds each time to compile... Thank you!