Only finding enjoyment the second or third time may be a bit too final. It feels that way most of the time because the second trip everything does jump out at me so much more vividly.
We may need to use your experience to promote reading with video games.
I know I started reading young, I think I mentioned 5 being the age I learned to read in another thread but recollecting I can't say for sure...everything earlier than my teenage years is a blur aside from blips in my memory. I can remember chapter work as you describe, finishing very quickly then going to sleep or reading a novel to get out of the classroom for awhile.
I remember the first time I got in trouble for supposedly not doing my work in third grade. The teacher was reading the chapter and she was going so slow I thought I was about to go out of my mind, we were supposed to be following along. I finished the chapter very quickly then began reading about Custer and the battle of Little Bighorn in a book I had checked out from the library. The teacher saw what I was doing and scolded me, told me to follow along as she instructed. I tried for a little while, became bored rather quickly and started reading about Custer again. Ended up having to copy the chapter five times while everyone else was out at recess...that woman was a real bitch. Fourth grade was better, didn't have a teacher that would read the chapter slowly in a monotone voice and she let her students work at their own speed. When I got finished with my chapter work she had me help a student that I guess was learning disabled in some way. He had alot of trouble reading and I can remember going over the different chapters with him to help him get a better understanding of the content.