Re: Sims 4 freezes after a few minutes of playing.
@da-oman971 The MCCC options is only relevant after the excess Father Winters have spawned, which shouldn't happen anymore. So playing through Winterfest now should be safe, regardless of how strange Father Winter looks. Still, if you want to be extra cautious, use "save as" to rename the save you're playing, which will leave the backup you recovered intact should you need to revert to it later.
If you play a while today and the save still runs well tomorrow, I think you don't have anything else to worry about, at least not as far as this issue is concerned.