Ionic 4 - Low performance in load a list of components

I’m using a infinite scroll of a ion-grid:

     <ion-col size="12" sizeSm="6" sizeMd="6" sizrLg="4" sizeXl="4" no-padding
            *ngFor="let item of items">

To load 40 items, the app needs 20 secs :slightly_frowning_face: In ionic 3, the same functionality need ~2 secs;

I try use virtual scroll, but with responsive columns does not works correctly.

Ionic Info:


   Ionic CLI                     : 5.2.3 (C:\Users\S59\AppData\Roaming\npm\node_modules\ionic)
   Ionic Framework               : @ionic/angular 4.6.2
   @angular-devkit/build-angular : 0.13.8
   @angular-devkit/schematics    : 7.2.4
   @angular/cli                  : 7.3.8
   @ionic/angular-toolkit        : 1.5.1

Have you found any resolution to this? I’m also noticing a significant performance hit when using ion-grid.