When trying to insert an image you might get the warning "Image too big" when selecting "Actual size" in the insert dialog
is to change the default settings.
note: this is tested on Windows, probably similar in Mac - check out the linke here if you are using Mac https://gist.github.com/cellularmitosis/e5e7d1517939b98418a58cdd8595dd8c
- in menu "Extras" , select "Configuration".