Extremely bad lag and console is spamming Entity in wrong place

Chunks will not load, console is being spammed with a lot of stuff mainly saying entity in wrong place and leading to the console freezing requiring a force close, other worlds work fine
What I expected to happen was...:
Describe what you thought should happen here
I expected to be able to play but i get 0-7 fps and can not break blocks
Steps to Reproduce:
1. I have no clue, it happened in the middle of me mining