The game at 60 fps and 60 hz in my testing works like it should - no problems there. Make sure the game is utilising 60 hz as well.I tried this and it looked even worse. I cant tell if its a frame pacing issue or microstuttering or what. But I fired up a few other games to make sure it wasn't my PC at fault and those games were all buttery smooth.
It could be a subjective thing you are experiencing that is not there.