MenuShowDelay Tweak
Changes the speed at which start menu and right-click desktop menu, and sub-menus in the context menu of files and folders appear.
The number is in milliseconds.
Note: Do not use 0 (zero). Users have reported issues with a value of 0.
W2K and higher
» Example Registry Tweak
;Change MenuShowDelay (Start Menu load speed) [HKEY_CURRENT_USER\Control Panel\Desktop] "MenuShowDelay"="20"