Sims 4 is Unplayable

Since the most recent update, my Sims 4 is now unplayable. I have done all the things suggested; I have adjusted my gameplay settings and repaired the game countless times. But the significant lag makes this game unplayable nearly immediately...not even after one hour like some others are reporting. I am having the most issues with Sims interacting with other Sims but it seems to have gotten to the point where anything I try to have them do leads to such a delay that I end up exiting out of the game. Very frustrating!