20 point difference between Blind Review and Timed

Hi everyone, I am looking for advice. On my timed Practice Tests, I usually get in the mid 150s range but when I Blind Review my scores are in the 170s. When I do the practice tests, I always seem to be running out of time every section, especially in RC.

My question is, how do I close this gap? What are some best practices for answering questions with speed?