Subvocalization is a good indication that you are going too slowly. Pick up the speed. Unless you are savoring the passage. I did a lot of subvocalization last week on vacation when I was reading for pure pleasure. I reread some paragraphs because I adored the way the author wrote.
Pure pleasure, however, does not mean I always subvocalize. On the plane back I was zipping through a book almost as fast as most people turn the pages.
