Actually, even though I set to 0.01sec, the speed is not that fast, it still takes more than 4 sec to finish a 400 pgs book, and the speed at which I'm autoflipping is still within the refresh rate range of my monitor so there should be no problem. Btw if the photoreadnig speed is very fast, you leave no chance for your conscious mind to read parts of the text, thus you eliminate the problem of compromising subconscious absorbtion of the material through conscious interference by readnig parts of the text while photoreading. I noticed that oftentimes my mind wanders during photoreading, but if the photoreading time is reduced, concetration goes up( i.e. its easy to keep concetration for 30 sec but photoread a paperback book for 10min. and you got problems)