Fast Forwarding freezes game

Taking my Sims to a 2 Day Vacation in Mt. Komorebi trying to skip through the night. The ingame clock stops at exactly 00:20 during the super speed due to my Sims sleeping. No keys execpt Esc work, also in Esc menu the shadows and sounds go on. Attempt to save ends in an endless saving animation. After some time the animation crashes and the game freezes. Shadows and sounds still going on and on. Only way to end the never ending saving screen is the task manager. Never had this severe problem before the update. Loading into the save again causes the same problem over and over. Impossible to play like this.