First Time page load very slow in Ionic


We are using lazy loading concept in our application. After implementing this, our application starts within 5 secs from splash screen to login screen, so there is no issues in this. But inside our application, 1 page takes very slow to load at first time only. After that it loads very fast. we don’t know why it takes so much time to load at first time only.Kindly give some solution to fix this issue. We are using Ionic 4