I did a search but can't seem to find anything related to the problem I am having, and so I am posting to see if anyone else has experienced it, or has any suggestions.
I am doing "The Reward" quest and the zombies in the bunker POI continually respawn after they die. I have gone through thousands of rounds of ammunition in multiple weapons and eventually just stood at the first doorway swinging with a laser baton and closing the door when they started to overwhelm me, but after one dies it respawns a few seconds later and joins the battle again. It is impossible to loot anything or finish the quest.
I have left the area to over 5km away, had a blood moon, fought wandering hordes, restarted the quest, restarted my game and the server has restarted at least once since it first started happening. The zeds inside the POI do not despawn and I am always in combat when I come back to it even after resetting the POI they stay in place and new ones spawn. Looking at the server logs it shows "Entity spawned # of 9" or "# of 5" just a few seconds after an existing zed dies in the POI and then it says something about overflow prevention.