@Teliel Try using this mod, which prevents the auto-placement of community lots in new saves:
You'd need to create an account on the site and sign in to download the mod. The reason I suggest it is that the loading screen is freezing around the time that the game tries to place these lots, so it might be hanging on that process. I realize that doesn't explain why an existing save wouldn't load, but the new save not loading is a bigger surprise here.
If this doesn't help, please try playing with your computer offline. You can sign into the EA App and put it in offline mode, then disable wifi and/or disconnect the ethernet cable before pressing Play. This tests a few potential issues at once.
