Posting a PDF article is not allowed, so I replaced your attachment with a pubmed link to the article.
NIMH ML (more precisely MGL) is not supporting G-Sync or FreeSync currently. I am not sure if I will ever have time to support the tech, so it is up to you. This method is useful mostly for visual psychophysics experiments and you probably have to give up behavior tracking during stimulus presentation, so it is not for NIMH ML, but for those tools that control just visual stimuli (although I don't think it is impossible to add it to NIMH ML).