The main use for editing this registry entry (found in HKEY_CURRENT_USER\Control Panel\Desktop) was to make the Start menu more responsive. However, Windows 8 does still have menus, of course, and this setting helps make them, well, more responsive.
The other useful one is MouseHoverTime (found in HKEY_CURRENT_USER\Control Panel\Mouse), which can be used to reduce the delay in pop-up descriptions appearing on items.
I've edited both of these but noticed where they don't have an effect. The File Explorer File menu and ribbon interface still have the delays. I started using Office 2007 when I installed Windows 8 and see that Office 2007 ribbon menus also have delays. Outlook 2007's regular menus have what feel like the stock 400ms delay.
Does the ribbon interface have its own settings somewhere else in the registry? Or is it an arbitrary delay setting that can't be changed?
Last edited by markweatherill; 13 Dec 2012 at 01:53.