Behavior of the wix-dataset (client/server side)

Hello,

I have a wix-datasets in my page that is connected to an external collection.

1 . I can observe that the page is really slow to paint ;
2. I can also observe that from the page itself (client side) theres an actual call to fetch data:
/_api/wix-code-public-dispatcher/siteview/wix/data-web.jsw/find.ajax?

My question is:

Is that the expected behavior? If this call is being done from the client side why the page is only being painted after the data load is completed ?

Thanks
Rafael