Low fps and failed collision detection in android

Hi ,

Am a newbee to cocos2dx. I just completed a game in which there is a ball which moves with the applied velocity and bounce back on hitting side walls. On iOS it works perfect and smooth. But in android, in some devices, the game experiences small lag and sometimes the ball gets out of the scene. Works smoothly in motorola Moto G( 1 GB ram), micromax android one( 1 GB ram) etc. But lags in asus zenfone( 2 GB ram), nexus 5( 2 GB ram). I have tried many methods mentioned in this forum. Still couldn’t fix it.

Please help me.