Switch to the Start Screen from the Windows 8 Desktop, and you will notice the animation where the Tiles slide and start appearing from the right to the left side. It looks cool and classy, but some do not like it this way, think it takes a bit of time and want to change its behavior. If you are one who does not like animations and wants Tiles, menus, etc, to be displayed instantly, then this post is sure to interest you, as it shows you how you can disable Windows 8 start screen animations.
Disable Start Screen animation

If you want you can disable this Start Screen animation. To do so, from the WinX Menu, open
Control Panel and click on the
System applet.
On the right side, you will see
System protection. Click on it. In the System Properties box which opens, select the
Advanced tab, and click on the
Performance Settings button.
In the Performance Options box,
uncheck Animate controls and elements inside Windows. Click
Apply and
Exit. This will disable Start Screen animation in Windows 8.1.
Now visit the Start Screen from your desktop, and see how quickly and instantly the Tiles get displayed!
Speaking of the Start Screen, you may have noticed that after the Windows 8.1 Update, the Start Screen now displays a button next to your user picture that lets you shutdown, restart, sleep and hibernate your Windows 8 PC.
twc