I can already read about 1200wpm normally, without that technique, but how fast can I go with this technique? Honest question. I've read that speed readers read

I can already read about 1200wpm normally, without that technique, but how fast can I go with this technique? Honest question. I've read that speed readers read 1500wpm, but I didn't learn this. Just got bored reading slow and tried some stuff. There is a big bad side to this. At school I had to read a part 3-4 times at least, because otherwise they didn't believe that I already read it. That's because everyone else was still reading.