I've noticed that with text files that are not large, but not that large, almost all the text editors I've found on Android choke badly for simple things like m

I've noticed that with text files that are not large, but not that large, almost all the text editors I've found on Android choke badly for simple things like moving around in the file. For example, my main org-mode file at work is 560K. The only appified text editor on Android that handles it reasonably is VimTouch (Emacs, vim, and similar all handle it easily in a Debian chroot on the same hardware). So it has to be the case that better data structures for text editing still matter in at least some realistic environments today.