Retention with spreeder is a matter of skill and practice. Don't give up easily. I've read difficult non-fiction in it with very good retention at 500 wpm. That requires a slower speed than I could read a simple novel (800+ wpm), but still much faster than I could read it in paper (under 300 wpm).
This took practice. I was reading economics books by Mises at 300 wpm in spreeder for a while and gradually increased the speed. I kept the speed low enough to understand it. However, it was never worse than regular reading.
Also, I started with 3 word chunks. I found that a lot easier than 1 word chunks. I normally use two word chunks now but that took work to get used to. I wanted to lower chunk size to reduce sub-vocalizing and eye movement. I've tried 1 word chunks but I lose over 100 wpm with them.
Anyway, low retention is caused by many things but is not inherent in RSVP.
This took practice. I was reading economics books by Mises at 300 wpm in spreeder for a while and gradually increased the speed. I kept the speed low enough to understand it. However, it was never worse than regular reading.
Also, I started with 3 word chunks. I found that a lot easier than 1 word chunks. I normally use two word chunks now but that took work to get used to. I wanted to lower chunk size to reduce sub-vocalizing and eye movement. I've tried 1 word chunks but I lose over 100 wpm with them.
Anyway, low retention is caused by many things but is not inherent in RSVP.