@SimGuruKuxiku I have Get Together, Seasons, Cats and Dogs, City Living, Get to Work, Jungle Adventure, Parenthood, Vampires, Dine Out, Toddler Stuff, Spooky Stuff, Cool Kitchen Stuff, Kids Stuff, Laundry Day Stuff.
I play on a regular PS4. When I only had the base game, city living, and vampires my game wasn't too bad but after each new pack added the problems get worse and worse.
My game starts having issues as soon as there's 3 or more sims in the household. Delay in queued actions, quick freezes that cause all queued actions to stop or all sims to reset. They can be on small lots or the large lots, it doesn't seem to make a difference. However Brindleton Bay is very bad for fps drops and stuttering. I am playing on windenburg isle and there are a lot of fps drops and stuttering. I've played all the base game neighborhoods. Load times are so bad too, I rarely bother leaving my home lot to visit any of the other neighborhoods or do much else with my sims, which is a shame. There's so much to do but the load screens are very long and sometimes time keeps marching on while you are waiting for the load screen to start that it'll take several in game hours to get somewhere.
I just added a toddler to my household and now the queued action delays and long delays when swapping sims. Just from adding a third sim to the household. When I have more than two sims in a household, I have to pause the game whenever I swap to another sim, otherwise so much time lapses and it takes so long to swap sims that they could be on the other side of the lot before the swap completes all the while the game seems frozen while it's swapping sims.
Edit: I forgot to add that if I use lot the conival lot trait or any aura objects with the auras on it also causes bad lag and game delay. Expiring buffs also cause bad delays, the buffs will take way longer to expire because the game effectively freezes until the buff expires. Half the time I have to press the pause or menu screen to let the game play catch up.