It is moving around (although the model isn't in the GIF) and is pixelated.
But, the GIF works normal when I open the model.
I've noticed this problem with many other GIFs from all around the site, but not all of them.
Is this due to the program used to make this GIF, or a problem in GrabCAD?
By the way, I've made this GIF using giphy, an online GIF maker.