when I will play in the world and has many buildings my minecraft begins to catch this must be a lag or something.

in version 0.11.0 of minecraft pe I was going to play and fought a little did not bother me much dae launched 0.14.0, and was heavy but with but MB and tava fighting a lot and launched the official 0.14.0 ie without bugs but when I'll play a world in infinite world catches hard to walk around the world to play hangs much this should be a lag or something I do not know, but hope you see it.