I rebuilt Org and Emacs from the development trees and something is wrong, because some Org files I use regularly have become incredibly slow to use. I rarely use the profiler and don't know what to make of what it says, but I opened a file and ran it while I moved around and expanded and collapsed some headings for a minute or so. (It was so slow that it took me a minute to do what would usually take me a few seconds.) I'll paste the results below. Does that say anything useful? There is a little LaTeX in the file but not much.
Any help on interpreting this would be welcome. I can try reverting to an earlier Git commit tomorrow. Bill Samples % Function 73203 70% - redisplay_internal (C function) 71496 68% - jit-lock-function 71488 68% - jit-lock-fontify-now 71472 68% - jit-lock--run-functions 71472 68% - #<compiled 0x1baf5fbd9c5fbb3f> 71472 68% - font-lock-fontify-region 71468 68% - font-lock-default-fontify-region 71436 68% - font-lock-fontify-keywords-region 71124 68% - org-do-latex-and-related 71124 68% re-search-forward 228 0% + org-activate-folds 16 0% + org-fontify-meta-lines-and-blocks 12 0% + org-activate-footnote-links 8 0% org-activate-dates 8 0% + org-activate-links 4 0% org-do-emphasis-faces 4 0% org-fontify-drawers 4 0% org-raise-scripts 28 0% + font-lock-unfontify-region 4 0% + font-lock-extend-region-wholelines 4 0% text-property-any 30951 29% + command-execute ... -- William Denton https://www.miskatonic.org/ Librarian, artist and licensed private investigator. Toronto, Canada