This is where stasis comes in. Just because something is not being drawn, does not mean it’s logic/code is not executing. There is a max draw distance of about 30k units, or so I’ve heard, and stasis begins at 20k units.
When something is no longer being drawn at all and there are no players within 20k units, all visual aspects are hidden, the collision is disabled(I think) and most of the time almost all code execution pauses and the actors replicate either never or much less frequently.
To answer your original question, every single actor goes into stasis, players, structures and creatures.
-WM