Sims freeze and dance instead of doing interactions

on my new Sims save my sims refuses to interact with other sims instead they just stand or start dancing (both of them) eventho there is no music. There seems to be a task being added in the background which makes the interaction queue go up but also immediately down. I changed to different lots and reloaded the game multiple times, nothing helps. pls fix your games EA or release updates after testing.