I’ve just read about “radio targets” in the org mode manual (section 4.3 at the time of writing this), and I immediately thought of using them in my knowledge base (Zettelkasten-style).

From what I understand though, radio targets only work in the same file. Currently my knowledge base spans a lot of small files. Assuming I concatenated them to one file, it would clock in at 5k lines (and constantly expanding). I am worried that this large org file would slow down emacs.

Does anyone have experience with using radio targets in such a setup? Are my performance worries unfounded?