Allow VIEWS accessing PARAGRAPHS fields collection
In D8 your View's are automatically cached; thus, your query is results are cached, so I wouldn't worry too much about this. Nonetheless, you can enable Show performance statistics in views settings (/admin/structure/views/settings), to see how long it takes.

Testing with 1 field, the View Render Time is ~1.20ms faster when you create a View of Show: Field Collection Item and then add relationship to node rather than a View of Show: Content with a relationship of field collection.