@kiiimmm13 @LunaticVariant Please remove your Mods folder to test (and delete localthumbcache). Many, many changes were made that affect mods.
I've noticed that too, so i removed all mods to test it out and i can see that MCC could be the potential issue to that.
No MCC mod my sims run as normal speed.
@dee15644 There can be a lot of causes of this other than mods and CC, but one that's come to my attention recently is a sudden huge excess of unhoused Sims. Have a look in Manage Households to see if a whole lot of new ones have generated, and delete them.
Other than that, common causes are -- depending on what your computer can handle -- lining up too many things in a row for the Sims to do, large households, and really stuffed large lots with lots of items that can be interacted with. Excess stuff in inventory can factor in too.
