This was also something that was enhanced recently and will be in Emacs 29: https://github.com/emacs-mirror/emacs/blob/21b387c39bd9cf07cddd50d092b5a5bec03ecd1d/

This was also something that was enhanced recently and will be in Emacs 29: https://github.com/emacs-mirror/emacs/blob/21b387c39bd9cf07cddd50d092b5a5bec03ecd1d/etc/NEWS#L532-L555 https://github.com/emacs-mirror/emacs/blob/21b387c39bd9cf07c... > Emacs is now capable of editing files with very long lines. > The display of long lines has been optimized, and Emacs should no > longer choke when a buffer on display contains long lines. > ...