Resume Game causes never ending loading screen

I can sometimes 'load game' and repair the latest one and it will work for awhile. Usually until I travel somewhere (or go to work with a sim). Most recently, I was fixing up a newly purchased rental property and I had to return home to rent it out but I never got there. I've repaired the game numerous times, and repaired the saved games from the load game screen. I trashed the 'latest.. ' whatever/can't remember the wording, it's not crash) files from the Sims 4 folder in the Electronic Arts folder.  It has not created another one since I did that, although I've had to force quit multiple times since. 

It's also been randomly quitting on me a lot more lately. I have just purchased a couple of packs from the exchange, and it seemed to happen after that. But I can't find those to disable them. 

If I uninstall the whole game, what will happen to my saved game? Can I uninstall and reinstall everything and make it work again with my existing game file? 

I'm on a mac laptop, OS 26.3.1 (a), No mods, but lots of additional content.