There is only delay when changing text: navigation all works instantly, as normal.
The delay has gotten to about one full second now, it's getting pretty bad. The file is around 15,000 lines long, the delay appears to scale linearly with the size of the file (when I open a small file the delay disappears).
I'm using Termux, if that makes a difference.
dw
(delete word) produce a delay since they are independent of buffer size. Or if it is all of them (as you suggest) maybe profiling (gnu.org/software/emacs/manual/html_node/elisp/Profiling.html) could shed some light on the problem? Also does this happen when you're not using termux? – Aquaactress Dec 5 '19 at 14:13