Sims freeze and stop responding to any queued or new actions

My Sims freeze on the active lot and stop responding to any queued or new actions, while in-game time continues to progress normally.

What happens:

Sims stand idle and will not perform actions

Time continues moving

Queue clears or actions never start

Temporary workarounds (very short-lived):

Reset Object (Debug) → rarely works

Pausing/unpausing → no effect

Switching to Build Mode and back to Live Mode → works once or twice

Pressing the Windows key and returning to the game → works, but takes a few minutes

Going to Manage Worlds and loading back in → works, but takes time

I have to repeat one of these fixes about once every few minute to keep playing.

What I’ve tried:

Multiple temporary fixes listed above

Searching online and trying every solution I could find

No permanent fix so far