This is one of the items that is tested in your Windows 8 App when you use the WACK.
If you are in Southern California, please email this post for more information on getting a token for your app by June 30, 2012!
Sustains 60 frames per second
Fast and fluid applications should redraw the screen at 60 frames per second.
Drawing with high frame rates is most commonly achieved by leveraging the GPU to do the drawing of the scene. You can accomplish this by:
Using the native animations in XAML
Leveraging independent animations as much as possible
Independent animations are animations running off the UI thread (most often in a separate hardware accelerated I thread