RC was always killer for me. My feeling was just as yours. I can read 2-3 times and still fail. When I understood what works for me, my rate on OG RC increased to 97%! I still struggle with small vocabulary and reading speed. But I finished my Verbal with 6 minutes left. What were key points?
1. Gin's recommendation.
2. Slow and "active" reading. I always keep in mind two questions: primary purpose and tone. At the end of text I know answers to these questions.
3. Exaggeration and restatement each paragraph, what are its main points. (it is why reasoning can help you:
11-t62631). what the hell! Why the author says about this damn theory "but other studies are necessary"? Aha! He believe that theory can be correct! Does he really believe? Definitely.
4. If you will do all above things, you will answer to all questions faster and almost without returns.
Good luck!