Noboru Ota <me@nobiot.com> writes:

> Source:
> https://github.com/nobiot/org-transclusion/issues/42#issuecomment-739570395
>
> I personally have never come across such performance issue.  Are you
> aware of some good test file or something to let other people reproduce
> it?

I tried to create an example file, but I start seeing issues far before
the file size becomes large enough for overlays becoming a problem.

Try to open the attached file and run M-x org-transclusion-add-all

Best,
Ihor