When I log onto my world the next day it takes forever to load and then is very laggy, when i look around everything is screwed up and on half of my house is there and everything is split apart and weird.

Put the summary of the bug you're having here

What I expected to happen was...: 

I expected to go back into the world and continue where I left off.

What actually happened was...:

It took forever and my house was split into symmetric pieces along with everything else

Steps to Reproduce:
1. Log off of your world and shut down computer
2. go back on the next day
3. everything is messed up and split apart from where it was