Instead of going to the thumbnails menu, just do a zoom out to see two pages in the same view, instead of one; then if done again you can see 4 pages and then 6, then 8 and so on.

Important detail is that, let's say you have the view for 8 pages in your screen, if you do the gesture to see the 'next page' you see the next 8 pages, so you can navigate much faster within the document.