How to optimize the loading time of an Ionic2 project?

Question

I made an application with Ionic2 from scratch, using by default the project "Blank" following the documentation.

The project itself is running smoothly.

But one thing that intrigues me a little is the load time on startup of the application.

Although I am showing a Splashscreen while loading the Cordova is performed, it is taking on average 10 seconds (in some simulations reached 15 Seconds) to finish loading.

After finishing loading I close the Splashscreen in the event fired:

platform.ready().then(() => {

  statusBar.styleDefault();
  splashScreen.hide();

});

My config.xml is splashscreen enabled, but if I take the splash, the application is on white screen (as it is not finished loading yet).

Config.xml

<preference name="webviewbounce" value="false" />
<preference name="UIWebViewBounce" value="false" />
<preference name="DisallowOverscroll" value="true" />
<preference name="android-minSdkVersion" value="16" />
<preference name="BackupWebStorage" value="none" />
<preference name="SplashMaintainAspectRatio" value="true" />
<preference name="SplashScreen" value="screen" />
<preference name="AutoHideSplashScreen" value="false" />
<preference name="SplashScreenDelay" value="3000" />
<preference name="SplashShowOnlyFirstTime" value="false" />
<preference name="ShowSplashScreenSpinner" value="true" />
<feature name="StatusBar">
    <param name="ios-package" onload="true" value="CDVStatusBar" />
</feature>
<plugin name="ionic-plugin-keyboard" spec="~2.2.1" />
<plugin name="cordova-plugin-whitelist" spec="1.3.1" />
<plugin name="cordova-plugin-console" spec="1.0.5" />
<plugin name="cordova-plugin-statusbar" spec="2.2.1" />
<plugin name="cordova-plugin-device" spec="1.1.4" />
<plugin name="cordova-sqlite-storage" spec="~2.0.2" />

Console of charging time

Ionic Native: deviceready event fired after 9833 ms 
Ionic Native: deviceready event fired after 10285 ms 

Based on that, I have the following questions:

Is there any way to decrease charging time?

Are there any settings/settings that allow the application to launch directly without this prior loading?

If time is needed, there is some way to start part of the application and let the loading take place in the background?