How do I know the reason of not running my game smooth?

As I am stuck in my game. Its a Web Player game for which I have been working on...but its not running smooth as it consists of 10 game objects which are started running after playing until the winning point comes and its a type of betting game so I have to make it run smooth on unity editor as well as on browser.

On playing the game looks so jerky and does not run smooth and jerk free. Please help me out any help would be appreciated. Thanks,