Portal v8 Modular Theme : Changing the Theme profile for a page

The default profile for the Portal8 theme is profiles/profile_deferred.json but you can override it at page level by setting the value of resourceaggregation.profile to different profile for example i can set it to profiles/profile_lightweight.json like this

Once you set that and access the page you will see that it does not have page action button any more.

Actually I was looking for this kind of user interface for selecting Theme Profile but with my Portalv8.0 installation without any fixpack this option is not coming for selection in Edit Page properties option