I've read that PRers using Adobe Acrobat use a setting to advance to the next page every second... I use a mac and macs have this handy program called preview. It lets me open PDFs and if I click on the starting page and hold down the 'page down' key it will keep advancing just fast enough for the text of the page to pop up, then it goes to the next page. I would say it advances through 20-60 pages a second.
With this I could PR thousands of pages in minutes... Each page does show up, and it doesn't form a blur, but is this advance rate too fast?