Hi, Out of curiosity, I timed 'emacs -Q' scrolling through an elisp buffer: I started the timer by hand and scrolled down for 1000 lines and it took 45s on Windows/WSL and 35s on Windows/native. This is on a pretty decent laptop (core i7, 32Gb ram, 4k display) I don't care about the difference here, but overall, I find it pretty slow. Is there something that could be done to enhance it? What is the main bottleneck here? Best regards, Fabrice