Android drawer slow switching between stacks

[rtt63]

Version

Tell us which versions you are using:

• react-native-router-flux v4.0.1
• react v16.2
• react-native v0.56

Expected behaviour

When I am navigating between stacks on android, it should be as fast as on iOS, or close to it

Actual behaviour

When I am navigating between stacks on my android (actually I am navigating to specific scene of different stack), it's have delays sometimes (1-2 secs, sometimes more). Navigating between scenes in the same stack is extreamly fast everywhere.

What I was worry about:
latest version - done, I updated it
remove console.logs from entire app
check gebug mode - checked, I am totally in release mode

Maybe the cause of this problem is my undertanding of on/onEnter prop, so please fix me if I am using onEnter wrong

<Scene
  component={Any}
  ..props
  on={() => {
     request()
     anotherRequest()
  }}
/>

It's the same on iOS and android, except on iOS I have tabs={true} and lazy={true}. So I just replace tabs to drawer on android, and specify contentComponent for Drawer at upper stack which is my entire app

I have hideNavBar={true} everywhere btw

[aksonov]

Yes, it is possible that you are doing something CPU-intensive within your onEnter. You should use InteractionManager.runAfterInteractions https://facebook.github.io/react-native/docs/interactionmanager