Hello,

My survival world suddenly became unplayable due to lag in certain area around my initial spawn point where all my stuff is constructed. It lags so much that most time I can't even turn my player or place any block - any touch is interpleted as long touch. But I can move using arrows and when I move far enough from the area (I think about 60-80 blocks) lag dissapears and all works ok, just I return - again lag.

It happened when I was trying to speed up my XP farm (using zombie spawner underground at about level 10) and killed a big slime (there is also slime chunk there). I thought it's because too much zombies spawned, but after hard tries I turned off the spawner and killed all zombies, but lag had not disappeared. Climbing up from the underground didn't help too.

I tried to load/unload the world and the app several times. Two my other creative worlds works fine.

Providing all my Minecraft PE files from iTunes so you can reproduce the bug.

https://drive.google.com/file/d/0B7AO0v4hK3VgbU5zNGpkS0NpZmM/view?usp=sharing

Please help! Don't want to loose a lot of work

Thanks in advance.