Game Crashing After Update

Last night when the update for the event rolled out, my game crashed to update itself for the event. Since then, the game has been crashing randomly, and has been so bugged it is nearly unplayable. infants keep trying to reach milestones and not doing so unless I restart the entire game. Entered build/buy mode and had to use the eyedropper tool before I could move items I already owned. Items disappeared when entering build/buy mode. Sims keep needing to be reset to complete actions. The garden event isn't even visible to me at this point. Getting really tired of these constant problems - this is why I play for 2-3 days in a row and then give up for months at a time. There are no mods or CC currently enabled because of how frequently this game updates.