When using the Start menu then you will notice a delay between different tiers of the menu hierarchy. For the fastest computer experience possible I recommend changing this value to Zero. This will allow the difference tiers to appear instantly. Start –> Run (Windows + R) –>Regedit.
Navigate to HKEY_CURRENT_USER\Control Panel\Desktop
Select MenuShowDelay from the list on the right.
Right click on it and select Modify.
Change the value to 0.
Reboot your computer.
