auto-window-vscroll = nil

core/core-ui.el

@@ -173,6 +173,9 @@ read-only or not file-visiting."
       scroll-conservatively 10
       scroll-margin 0
       scroll-preserve-screen-position t
+      ;; Reduce cursor lag by a tiny bit by not auto-adjusting `window-vscroll'
+      ;; for tall lines.
+      auto-window-vscroll nil
       ;; mouse
       mouse-wheel-scroll-amount '(5 ((shift) . 2))
       mouse-wheel-progressive-speed nil)  ; don't accelerate scrolling