I've noticed the past couple of times I have tried to play the game it will crash. Where it crashes will vary - sometimes it will be upon loading up, and sometimes I will have been playing the game for 15/20 minutes and it'll randomly freeze up.
I have an iMac and have never had any performance issues with The Sims 4 or any other game. I have tried repairing the game several times on Origin to no improvement. Can anyone help?
Has this started happening since a recent update to the game, your version of macOS, or Origin?
Please can you provide more information about your Mac. Instructions on how to do so here - http://answers.ea.com/t5/The-Sims-Mac/READ-FIRST-Sims-4-Mac-Help-Guides-and-Troubleshooting/m-p/4612...
Using CC/Mods is at your own risk, EA are not responsible for making the game compatible with 3rd party content, the creator is.