LG's freesync monitors can usually be overclocked through CRU an extra 5-15hz on average. Ive had the 29um57 which would OC 15hz from 60 to 75hz over hdmi, and the 34um68 which would oc from 75 to 85hz(freesync range was also extended to support this and worked flawlessly), it could actually go to 90hz but i would get out of range pop up even though the picture was perfect with no frame skipping.