If your doodads are only within a specific area, I highly recommend making a specific region around them using the region editor. It isn't the best idea to run the animation function over the entire map area. If the map is huge, I imagine the engine could take a long time enumerating all of them. But hey, you don't know until you try it. You can try it as it is, and if it doesn't cause a short freeze or anything, then feel free to leave it as it is!