Ionic 4 initial slide loads with delay

Ionic Native
1

I updated my Ionic 3 project to Ionic 4 and since then my slider first loads slide with index 0 and after some seconds it loads the initial slide. Could lazyloading be the problem?

.html

<ion-slides [options]="slideOpts" (ionSlideDidChange)="slideDidChange()" #myslides style="height:100%; width:100%;">
        <ion-slide>
            <app-noticed-events style="height:100%; width:100%;"></app-noticed-events>
        </ion-slide>
        <ion-slide>
            <app-home style="height:100%; width:100%;"></app-home>
        </ion-slide>
        <ion-slide>
          <app-map style="height:100%; width:100%;"></app-map>
        </ion-slide>
      </ion-slides>

.ts
slideOpts = {initialSlide:1, zoom: false}