I haven't had any crashing, but I have had thermal shutdowns causing me to lose progress, which is almost worse...
In other news, I did a thing, and I'm now worried that I may have failed my Dynasty. My three sims were meant to have their birthdays on the same day, the founder's adult birthday, his wife's elder birthday, and his son's teen birthday. This happened to fall on the weekend so first thing on the saturday the ticker reaches 0 days left and I get the notification "Why not throw a lovely birthday party for Adam/Nevaeh/Noah?" I first threw a party with Noah as the birthday sim, but the flarbing "Compliment the birthday sim 4 times" requirement rolled and no amount of "compliment outfit" and "congratulate" would do - long story short he only got a silver medal which is fine, but obviously doesn't count for the dynasty party requirement. So I've still got a few hours of daylight left, I throw another party on the Saturday for Adam, the founder. I get the same darn flarbing compliment requirement and again, only get a silver. Everyone's in needy desperation at this point so I call it a simday and send everyone to bed. Next morning, Sunday, Neveah still hasn't auto-aged up to elder so Adam throws a birthday party for her and I finally succeed at getting the gold medal for the event.
But now I'm worried. Did I age Adam and Noah up a day early? The ticker read 0 days until birthday, and I got the "it's so-and-so's birthday" notification, but there weren't any sparkles in the ticker (I don't think) and they all could have remained in their current age until the Sunday as Nevaeh did, I'm assuming. I haven't played/observed birthdays in this game close enough to know the mechanics in detail yet.