After text input ,Keyboard pull down leaves White screen for quite sometime

After text input in scrollable ion-content, Keyboard pull down leaves White screen for quite sometime, it is bad for user experience. Gives an impression of lagging app.

How to fix this?
How to scroll down my ion-content view immediately , once user finishes the input, Althought key disappears, with manageable time.

How can i speed up this two things, after user finishes input.

  1. Scroll Down ion-content.
  2. Hide keyboard.

I tried manually to call scroll down, via $ionicScrollDelegate.scrollbottom . But it didnt work.

ionic version: 1.2.4
tested on device: android version: 6.0.1,moto g 3 turbo

See the link below for that white screen issue.