lag issue

Hello , mojang , how are you ? I hope you are fine .

OK let's get into this , I have recently downloaded and played MC PE V. 16.100.53 (and ,52 , 51) and I have found out that those versions have a lag issue  , while the 16.100.50 version of the game Does NOT have this Issue (for some reason).

I hope you fix this issue soon . Thank you for your time