Skeleton Spawners create huge lags. It keeps spawning Non moving Skeletons and there will be like 50+ in a spawner room, which made my fps go down from 200 to 11.

Put the summary of the bug you're having here

What I expected to happen was...:
A normal working spawner

Describe what you thought should happen here
The Skeletons should just spawn a walk around, and stop spawning after like 4 spawned

What actually happened was...:
There were more than 50 skeletons not moving in a room , causing huge fps drops.

Steps to Reproduce:
1.Find a spawner room.
2. ...
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