Temporary solution for crashing and freezing sims4 on macbook

if your sims 4 on origin looks like this picture, then while in-game meaning in the save you created or are playing, click ( option, command, ESC )at the same time and the force delete should come up, now just move it( force delete screen)  to the left until it's out of sight, and the game somehow runs fine. let me know if this works for you.