Simulation Lag. Get A Better Computer?

i own what i consider to be a very decent gaming pc with a i5 9400f and a gtx 1650 super and i still get simulation lag albeit depending on sitations like which world i am in and how many sims are there but it seems like simulation lag is a part of the game they do definitely need to fix cuz i have played sims 3 for endless amounts of hours and never experienced something like this so its bizzare this happens with the sims 4