It's sad that developers still, many days after release, did not notice this *huge* bug. Latest nVidia card/latest drivers, monitor refresh rate 120Hz = smurf will not jump or jump poorly. Switching monitor to 60Hz (or limit refresh rate to 60Hz in nVidia control panel) - everything is fine. In this days of age this is and unacceptable bug and shows sloppy work and disintrest from developers. I just can't believe that nobody reported this already.

I just picked it up and can confirm that this bug is still present. I'm also disappointed truly. However, it's really a minor fix on our end. I force V-sync through NVCP. I also have to limit my framerate with RivaTuner. After that, the game is silky smooth. The sweet spot for this game is 117 fps via RTSS. v-synced on a 120hz monitor with g-sync. Regardless, this will be a refund on my behalf.

EDIT:

After playing around extensively, the fix is even easier than stated. Simply use in-game v-sync and set Riva tuner to the exact refresh rate of the monitor. Seamless!!!!! I decided to keep the game out of nostalgia.