Why do my games lag after updating to Android KitKat?

  KenBassig 02:39 29 Oct 14

My phone is a galaxy grand 2 and before i updated to Kitkat my phone played games like Batman Arkham Origins and Asphalt pretty fine and when I did upgrade to KitKat it lags. What should I do? No factory resets please or downgrading please it might brick my phone. What should I do please help.

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