The game sometimes freezes for a few seconds when destroying blocks. It also happened when I was fighting off Endermen. I'm not sure what causes it.
MCPE-148443
Random freezes/frame rate drops
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Thank you for your report!
However, this issue is Invalid.
Performance drops are expected to happen between versions, especially in betas. Simply stating that "My game is laggier" is not helpful for Mojang to diagnose your issue. If you can pinpoint a specific cause when lag happens for you, please open a new report for that specific issue. If you think this might be a hardware issue please contact Community Support as they might be able to help with your issue.
Keep in mind that Mojang is constantly optimizing the game and simply playing the game provides feedback to Mojang on which parts cause performance issues.
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