LG: speed vs. accuracy

I'm looking for suggestions on increasing my speed in LG. Here's a little background info: I'm usually averaging 14+ during Preptests, but both during BR and during untimed practices I am nearly getting them all correct (22+). During the timed drills and Preptests, I am able to make the inferences and split the boards, but not quickly enough to get ahead and finish all 4 games -or even all 3 sometimes. How do I increase my speed and get these game boards down faster (and still accurate, ideally)? And at what point does the practicing and BR-ing click where I'm doing this quickly and efficiently?

Help!