Hello, @suneye1982,
This is not a standard way. As it is clear to understand that the default WordPress theme has no such functionalities and features it’s just a simple theme so it will not take much time to load. Site speed is affected based on the site functionalities and features. So that is why you are seeing different results with our theme and different results with the default theme.
I hope it makes sense now.
Regards 8Themes Team.