I can also help you do some bug testing if needed. I did a few more tests this morning. One where I removed all mods and just sped up time and eventually same thing happened but on a different month. Animations still happen but the time freezes then eventually I can’t even pause the game and it won’t take any commands from the mouse or keyboard.
What I did notice is in the environment file in this save the current day and monotonic day did not match (no idea what that means) but what I noticed is if I alter those values it will let me get past the freeze. However the freeze would happen again a few months later.