I have added wheel sprite and apply easing in it but whemn i run in firefox it get jerk whereas when i run in chrome it rotates smoothly

heres my code

var rotateToA = cc.RotateBy.create(6, 500); //wheel rotation action
var rotateEase = cc.EaseSineOut.create(rotateToA); //apply easing to rotation

var finish = cc.CallFunc.create(this.scoreCounter, this); //callback function called when rotation gets completed
var seq = cc.Sequence.create(rotateEase, finish); //sequence of action
wheelSprite.runAction(seq); //perform action