Is there any solution of very slow Xamarin.Forms start on Android phone?

Hello, I developed a Xamarin.Forms app and I test it in a physical phone, a Motorola with Android 7, octacore and 4GB RAM. The main screen of my app opens in 4s and there only have three buttons, and a few labels. I don't do processing when the app is started, only I read value of App properties. After Google search, I read that there is a known problem of Xamarin.Forms. Is there any solution?

Thanks!