React native slow loading image and application process

Question

I'm working on a react native android application. My IDE is android studio and I'm using android studio emulator.

When I try to load local background image to my application page, the image loads very slow and all application process also works slow.

I saw some post about this issue but could not find a proper solution.

I didn't understand the relation between the image and the other events.

For example, when I press a simple button, detection of the press action takes seconds if the image has set.

Sample code:

    ...
    onPress1(){
          alert('onPress..');
        }
        render(){
           return(){
             <View>
               <View style={ somestyle }>
                 <Image source={require('./img/background.jpg')} />
               </View>
               <View style={ somestyle }>
                   <View style= {somestyle}>
                       <TouchableHighlight style={ somestyle } onPress={() => this.onPress1()}>
                           <Text style={ somestyle }>Btn 1</Text>
                       </TouchableHighlight>
                   </View>
               </View>
             </View>
           }
        }
    ...

Any suggestion ? Thank you very much.