Freeze

My game runs fine until i get to where my sims need to sit down , then it freezes for a few minutes  regularly until they suddenly sit , This is constant if i take my sims to somewhere like a restaurant where other sims are often sitting down , They go to sit , stand by seat and the whole game freezes a few minutes , then suddenly sit , moments later it again freezes as other sims go to sit 

All exp packs , game packs and stuff packs , a very few kit pack , Updated to the latest update , Only CC clothes and hair . Still the same if i remove them and try a vanilla save 

Been like this now for a while and no i have no intention of removing some packs and playing without  content i have paid for as has been suggested to some