I frequently run a Maven job in compilation mode. Maven is very verbose and spews all sorts of stuff to the screen. The build as you might imagine runs for a while.
Randomly, while bored and waiting for this job to complete, I happened to notice that if I shake the mouse over the (focused) window the speed with which the output is written increases significantly. What could be the reason for this? (I'm prepared for something awful.)
Emacs 28.1 aarch64-apple-darwin21.1.0; OSX 13.5.1