I'm also learning new strategies for CR, RC etc and in the same boat as you are. I don't think there is any magic trick/article, I've seen or read about "reducing time while maintaining accuracy", for any section in GMAT. "Practice, Practice and more Practice" is the only mantra for reducing time while maintaining accuracy. I know 'it's easier said than done' but I think everyone would agree on this.
Wish everyone 'Good Luck' who're looking for ACCURACY and SPEED, including me:) .
"Whether You Think You Can or Can't, You're Right"--Henry Ford
My GMAT Journey