Sims stuck in loop

After about 10 minutes of gameplay, without warning my game will crash. It wont close, or send a report, but my sims will freeze in place and I cannot leave my household screen or close the game like normal. My sims will keep repeating an action (like turning their head) over and over, time will not progress, I cannot pause or fast forward time and if i enter Build/Buy they continue to move in their repetitive action way. 

I do not play on Legacy sims, I am on Mac, I play with mods but I check for updates before every gameplay. I have tried repairing the game and deleting my localthumbcache file, but it just keeps occuring and is making gameplay exhausting.