I'm seeing quite a big difference with this patch (no mantle for me) - its a lot smoother in general though some of the places that bogged down before still bog down, and ~15% FPS increase overall - though mostly in areas that I didn't need any extra FPS :| (i.e. one of the spots I use to test changes has gone from 144 to 167 fps - whereas one of the areas that gets bogged down has only gone from 67 to 72).