Variable: tooltip-delay
tooltip-delay is a customizable variable defined in tooltip.el.gz.
Value
0.7
Documentation
Seconds to wait before displaying a tooltip the first time.
Probably introduced at or before Emacs version 21.2.
Source Code
;; Defined in /usr/src/emacs/lisp/tooltip.el.gz
;;; Customizable settings
(defcustom tooltip-delay 0.7
"Seconds to wait before displaying a tooltip the first time."
:type 'number)