Disclaimer: Step 2 and 3 are system wide changes so do so at your own risk. I have included annotations in the video that explain how to reverse these changes.
IMPORTANT: As of patch 1.38 in ARMA 3 GimmeMoarFrames will not allow ARMA 3 to start. To reverse it, go back into the GimmeMoarFrames zip file and double click the GMF_off.reg file as admin.
Alternative GimmeMoarFrames link: https://drive.google.com/file/d/0B7pBa0qclyDSS3AxUks5Y0lVcDA/view?usp=sharing
Also check out this guy’s suggestions on Reddit (great advice for DayZ Standalone): http://www.reddit.com/r/dayz/comments/2tedel/i_made_a_guide_to_getting_the_best_fps_in_dayz/cny9rt5
Massive thanks to 95TurboSol for the use of his text/colour grading effects. Go check out his channel: https://www.youtube.com/user/95TurboSol