Loading the page on Fast 4G connection takes 9,61 seconds before I see _any_ content on the screen. This is loading the "all contacts" page that shows 12 items

Loading the page on Fast 4G connection takes 9,61 seconds before I see _any_ content on the screen. This is loading the "all contacts" page that shows 12 items with a title, excerpt, time stamp and user name. Is this expected performance? Network shows the app downloading huge 4/1 megabyte chunks.