Mobile game laggy?

Hey everyone,

I am not sure what the reason could be, but my simple 2D game is very laggy for mobile... When I run it in the editor on my computer (while it is charging) it runs so smoothly, but when I unplug it from charging, it runs exactly like my mobile device... laggy?

I honestly don't know what the problem could be. Any help is appreciated :)

A game that runs at exactly the same frame-rates as my current game is: https://www.assetstore.unity3d.com/en/#!/content/59187 - (It is a free)

BUT WHY IS THIS? Because games like the real colour switch, have absolutely no lag? If there are some settings to do with graphics that I do not know, please do tell me :)

Thanks, Daniel