gistfile1.js

// ==UserScript==
// @name           Refresher and scroller
// @namespace      refresh-and-scroll
// @description    Refreshes page after 5s and scrolls to 1000px.
// @match          https?://yourdomain.com/*
// @version        0.1
// ==/UserScript==

window.addEventListener('load', function() {
  window.scrollTop = 1000 /* px from the top */;
});
window.setTimeout(function() {
   window.location.reload();
}, 5 * 1000 /* 5s */);