Freesync can help a bit just below it's range if it supports LFC. I think it basically just doubles say 22fps to 44Hz in an effort to keep things stutter free. I still need to upgrade to a somethingsync monitor lol. Modern games are fine at 1080p with a 1080ti as I can keep them frames well over 144fps with reasonably high settings anyway making it useless. But my roms.... It would make life so much easier to have it just switch to 50/55/60Hz or whatever on the fly, rather than stutter like hell trying to run 60/144 or require manual intervention to set the right refresh rate for the right game.