I learned to speed read in 5th grade about 50 years ago. A few kids were chosen for some sessions that taught us how to skim for meaning and comprehension. There was a special projector that would scroll a column of text while showing us a narrow window of 1-2 lines. I really worked at it and could "read" most novels in a day or two. This worked okay until I ran into All the Pretty Horses. The weird style made me slow down just to be able to read it. I came to really enjoy the lack of punctuation and occasional long, stream-of-consciousness passages. I know it drove a lot of people crazy, but it brought back a love or reading and is one of my favorite books of all time. It changed the way I read non-technical stuff.
Speed reading is great when you're skimming for information, not so much when you're supposedly reading for enjoyment.