There’s often many a tick between your click and a menu’s flick.
To fix this delay in display, click on Start > Run, type ‘regedit’ and click on OK.
Next, find ‘HKEY_CURRENT_USER\Control Panel\Desktop\’.
Pick ‘MenuShowDelay’, right-click and select ‘Modify’.
Change the value to ‘100’ and scram.
The lesser the value, the faster your menus open.
Yeah, try ‘0’, and see what happens