Setting Detail of Master Detail page causes flickering

Hello!
I'm trying to prevent flickering from happening when I change the Detail in MasterDetailPage.

In the constructor of the page I create all the required pages like so :
aboutPage = new NavigationPage(new Pages.About());

And then in the Clicked event I set the Detail to one of those instances:
Detail = aboutPage;
IsPresented = false;

This results in screen becoming completely white for a second, including the header, before pages show up.

How can I fix or mend this?

Thanks.