Can I launch halo custom edition with vsnyc on?

So I downloaded this program called Ecran.GUI that allows me to have custom resolutions for Halo custom Edition. After applying the fix I tried to turn on vsync to get rid of the screen tearing but it reverts me back to the original resolution. Then when I go to apply the fix again it turns off vsync. Is there any way for me to launch the game with vysnc already on?