Slow startup on iOS

[d3lboy]

I am facing a problem that MAUI app startup on iOS is much slower than on Android or Windows.
The deployment is done using Visual Studio Version 17.3.0 Preview 1.1 and I have tried to create and deploy a new project, without any additions.

Startup on iOS (Iphone, Ipad updated to the latest OS version) >10 seconds
Android <2 sec
Windows <2 sec

Can't find any resources regarding this.

P.S. Xamarin Forms vanilla app built and deployed with Visual Studio 17.2 is much faster, <4 sec on the same devices.