Laggy when ionic run android

why after compiled to apk and run in device. everything becomes laggy?
if we run directly in mobile browser. It smooths like native.
how to overcome this?

Well there are a lot of thing that could be the cause here. What device are you using, what version of android. Any links to the app?

Not a fast device. Samsung duos i9082 android 4.1. I used the collectionrepeat from github to test. Smooth in mobile browser but laggy in app

Yeah, it’s probably the device. I looked up the device and it’s rather old with limited specs.