Hey, currently I got the problem that on my server, NPCs (soldiers) randomly spawn in different locations and just start shooting at each other. I also got the issue that after a certain uptime (I think), the NPCs start going crazy – they jump out of cars, attack players, and just go full rampage mode.
Have you tried to lock down the session using SetRoutingBucketEntityLockdownMode?
This would prevent NPCs from spawning unless they are created by the server.