CC Build/Buy not loading?

Haven't seen anyone else talk about this so I thought I'd go ahead.

After a little bit of trial and error, my game is working. Sort of. I don't have script mods, but I do have CC (CAS & Build/Buy).

Before the update, everything was fine. The issue is that now my game will only load to the first screen (Play/Load Game options) when I remove every bit of Build/Buy CC. The CAS CC meanwhile is absolutely fine. But no matter which bit of Build/Buy CC I put back, no matter how much, which creator, etc., it breaks. Even one piece, eg an armchair. I'm stuck on the eternal loading screen and when I go to Task Manager, it's showing Sims 4 Not Responding.

Therefore, the 50/50 method isn't going to work for me. It is literally the entirety of Build/Buy.

Has anyone else encountered this? And any ideas as to why it's happening? (Because surely not every single piece of Build/Buy CC by multiple creators is broken, SURELY?!)

Any help is much appreciated.

I play on a MacBook Air which is fully updated and could handle all of my CC just fine before the update, never an issue.