Crazy Spawns of Necks... Kill 1, 2-3 spawn from it's corpse...

Crazy Spawns of Necks... Kill 1, 2-3 spawn from it's corpse...

I've only recently started seeing this and wondering if it's caused by a mod or something else.

Originally thought it was a mine near by (from Ore Mines mod) as they often spawn in meadows with Necks, but none are near by.

It's caused me to abandoned one world I was working on because I just couldn't log in any more. I did farm them for a bit causing even more and more but then can't even load it any more.

Advice/help to remove it if possible.