My reading speed was once tested at 400 words per minute (which I think is about professional proof reader speed? Don't really know what is an average speed.) I am often reading between 4-6 books at a time (no - not ALL at the same time for the smart alec who is bound to ask
). I just prefer to read more exciting or difficult books in the daytime and something light before I go to sleep.
I can recall the plots of books I read years ago, but if the book is difficult - a textbook for example - I just read it twice. This fast reading speed was a boon at school as I could read a book four times while everyone else was reading it once, giving me a probably completely unwarranted reputation for being smart! Nope, all I could do was read faster!
My theory here is the way I learnt to read - sort of self taught at about 4 years old. Not having to go through the education system's whacky ideas on how children should read probably saved me.