[preek]

I don't think you did. You probably used the sister project https://github.com/200ok-ch/org-parser which has a well known issue regarding what you are describing: https://github.com/200ok-ch/org-parser/issues/56

organice has no such performance issues (and does not run on the JVM). I use it daily with 5k LOC files.

[funcDropShadow]

You are right, I was under the assumption that Organice did use 200ok-ch/org-parser. Sorry, for the confusion.