There seems to be a problem with the animation speed of recently uploaded GIF shields. If you test some of the newer shields on Taylor Richards, it's very noticeable that the animation speed is much faster than the GIF shown on the site (to the point where it essentially ruins the shield).
I tried some older GIF shields and they work fine. This problem only seems to affect recently added shields.
Here's one you can try to see exactly what I'm talking about
:
http://www.taylorrichaards.com/pizza...brb_shield.gif
Equip the shield in-game and compare the animation speed to that of the animation shown in the link and you'll see a very noticeable difference.