If you want to record replays:
For this purpose i vsync (on video) at 60. It gives the best results for youtube at 60:
Click here
The stuttering is probably caused by jumping framerates.
Vsync gives the best results. But some don't like input lag during gameplay.
You could set max framerate in the player.json file. To avoid jumping framerates during gameplay and replays.
Open the player.json with notepad and: look/search for: "Max framerate=..." Set it to what you want. Usually something around your lowest framerate and matching with your screen.
If you want to experiment with graphic settings.
@Spinelli has made a tutorial:
Click here
Note: each time you change graphics settings and load a track. It needs to rebuild the shader files. If you don't change graphic settings, the track will load faster.