This happens to me very open lately. It seems to be caused by lag. It makes the game barely enjoyable anymore.
I don't know if this has anything to do with it or not but...I have a shortcut to the SIMS on my desktop as well as the origin app to launch the game. I stopped launching the game through the Origin app and just used the shortcut on my desktop and haven't had the problem since. I tried everything prior to this that was suggested and nothing worked.
So my assumption is, is that there is an issue with Origin and how the game loads/runs
