thats not from the latest update, but from players killing the npcs on your server. you can always lower npcs or disable npcs to solve it

I am running the latest version of this plugin on a 100 population server (no max, current) with zombies all over the map and custom NPCs at our monuments and I have not had a single issue you describe

aye but a lower end machine or one that needs a restart can have this issue

I'm leaning towards it being a host problem, I'm with gtxgaming - i've disabled the bots to see if that makes any differnce 

cheers

It most definitely is a host side.  I just wanted to clear up that the plugin is "working".  It's sort of like trying to tow a hosueboat with a Toyota Carolla.  The houseboat is not the problem.  And the Carolla is not necessarily the problem either.  They just cannot perform the task at hand.

So yeah, trying lowering some weight on the hoseboat (unload other plugins or especially decrease bot counts those things are heavy).  If not, time to upgrade to a truck