Hi Hero8888,
While it's understandable that you might want to know more about why you receive the scores that you receive, the subjects that you're asking about are NOT relevant to what you actually need to hit a V40.
You do NOT need to be a 'fast' reader to score at a high level on the GMAT; you DO need to be 'efficient' though (and that includes how you handle your note-taking and organization). Based on the information that you have provided, it appears that "your ways" of handling the various question types in Verbal section are inefficient overall - which is why most questions take you longer to solve than they should. It's also likely that on too many questions you "narrow the answers down to 2 choices" and then "guess." From a probability-standpoint, you're going to get HALF of those questions wrong - which would almost certainly limit how high you could score on Test Day (especially if you take that type of approach too often); during your studies, you might also periodically be "luckier" on a CAT and receive a score result that you can't repeat.
Thankfully, the Verbal section of the GMAT is as consistent and predicable as the Quant section is, so you CAN train to score at a higher level. The key word there is 'train' though - you have to focus on learning and practicing the proper Tactics - along with doing all of the necessary note-taking on your pad - to earn that higher Score.
Before I can offer you the specific advice that you’re looking for, it would help if you could provide a bit more information on how you've been studying and your goals:
Studies:
1) What study materials have you used so far?
2) What 'steps' do you go through when dealing with a typical, RC, SC or CR prompt?
Goals:
3) What is your goal score?
4) When are you planning to take the GMAT?
5) When are you planning to apply to Business School?
6) What Schools are you planning to apply to?
GMAT assassins aren't born, they're made,
Rich