Wow.. nice find!

I've faced something similar without knowing about this, when I was young..

At the age of 6, I was at a school where my main teacher taught me how to read in a slow and steady kind of way.

Two years later I switched to a school where my teacher had this point of view that I was not good at reading because I couldn't read fast enough like the other kids.. So I had to adapt to them and started trying to read fast enough to keep up.. and eventually got it.

But then again 3-4 years later I moved to another school where "slow reading" was the normal thing and people just couldn't keep up with me.. So once again I had to learn how to slow down.. I was frustrated at first but some time later I was able to read slowly again..

And one last time, I moved on to a new area where guess what... the other kids were reading relatively fast..
Well, it was rather awkward at first but I adapted once again and thankfully that's when I finished school, so I've been reading really fast ever since..

Sometimes now when I need to read out loud for other people I still have a lot of trouble slowing down and they almost always ask me to.. lol..

The problem is that after so many years of reading fast my eyes are used to reading a bunch of words ahead of my speech and when I slow down my speaking, I lose my flow because the words to say, pile up more than my "buffer" can hold, I guess..