Guys, thanks for trying to help but please read my messages.
As it’s an open world RPG using streaming (world composition), I don’t want to destroy/spawn NPCs each time the NPC is out of the player’s radius.
This would makes the NPCs reset its behavior tree/teleport to it’s starting point, etc.
As distant landscape tiles are only lowpoly meshes without actor, only the actors on closest tiles are loaded. What I want is to set them in a “low CPU/memory usage” mode beyond a certain radius (something like 4000 UE units around the player) but not destroyed, and being fully active while in this radius.