Illustrator animated zoom "randomly" stops working

I've been having this issue for a while, but my animated zoom seems to randomly stop working. I'll exit Illustrator, open it back up, and it will work again (same document) for a while. I had this issue with an old document I was working on that had a wild amount of layers/textures/you name it, so I assumed that file was simply too complex for my computer and it made sense. This file that I'm working on now though only has 3 shapes, two of which have simple opacity masks on them. I've worked on way more complex files on my computer and not had any issues, so I'm not sure why it's happening now. Any help would be appreciated. 
(I already made sure that animated zoom is turned on)