my game is lagy

Put the summary of the bug you're having here
My game is lagy .
What I expected to happen was...:
To plau on my mcpe game

What actually happened was...:
I was walking around and it was lagy

Steps to Reproduce:
1. Go in minecraft pe
2. ...play and walk around a little bit
3. ...and you well find out the game is not smoot and lagy