This is what Sims 4 is lacking

Uh I play Sims 4 on ultra and have all the packs and mods/CC. Sims 4 has the lowest spec requirement of all my games on steam including the Sims 3 with DLCs. I think it is about slightly lower specs as my Stardew Valley game which is 2D. My Sims 3 loading screens are faster not using the interactive loading screens.

Sims 4 also has severe memory leaks like the Sims 3 did which also have to be remedied with mods.
https://forums.thesims.com/en_us/discussion/787265/sims-4-has-a-severe-memory-leak