Hi,
i have followed the following documentation:

https://github.com/angular/angularfire2/blob/master/docs/2-retrieving-data-as-objects.md

Anything works fine, except that it takes 23 seconds to display the initial data.
If I update the data i see it immediately changed in the firebase console so the connection is good.

Thats my app:
https://daslicht.github.io/Tour-of-Heroes/items

I also tried it hosted on firebase with the same result

That's how I load the data :
https://github.com/daslicht/Tour-of-Heroes/blob/firebase/src/app/items/items.component.ts#L16

What am I missing please ?