I've noticed this too. It's worst in my household with the worst Simulation lag. I've been busily deleting things right and left, as they have bad Simulation lag on their home lot and were perky and responsive on Batuu, and are fine on other lots. We might have to just move. ☹️ Bulldozing the lot and replacing it with a gallery lot helped, but...
Sim: Decides to "chat"
Me: No, go write a book for your job's at-home task.
Sim: queues book-writing but continues their VITALLY IMPORTANT conversation
Me: Oh, for... *cancels conversation*
Sim: Continues SUPER VITALLY IMPORTANT conversation for maybe another hour or two unless I reset object on them
<I digress? might be relevant>
FWIW, I'm defining Simulation lag as:
- Cannot switch active Sim by clicking unless I hammer the button maybe 50 times. The space bar works but is kind of slow, and I have to count or it skips past the Sim I want.
- Sims pause when given instructions and think about it (five seconds our time?)
- Instructions take a very long time to end up in their queue (five to ten seconds our time)
Framerate is fine. Sims are just slow to respond. They're not Children of the Corn any more, as I've apparently deleted enough objects off the lot that they're playable, but they're not zippy at home, either.
At least it doesn't look like my game is paused any more, now that I've bulldozed the lot?
[edit] https://youtu.be/U2-173q1fU8
I queue the Sim in the bathroom to go to bed and it takes him a full minute and twelve seconds to actually do it. Meanwhile his housemate is doing Children of the Corn next to the bathroom and his wife is washing a dish in the bathroom sink as per normal.
</I digress? might be relevant>