G-Sync problem

Yes! I was also having the same issue green and red halos around light reflections. I finally figured it out, it is caused by the windows game bar. if you press windows button + G it will bring up the gamebar and you will notice that the halos disappear instantly when the gamebar is visible and reappear as soon as it goes away (you can test this by looking at the fireplace in the tavern)

The artifacts go away if I have gsync enabled in windowed mode but not in fullscreen mode. They only disappear in fullscreen mode if I hit windows + G to pull up the game bar or if I move the mouse to the top of the screen and make the window title bar appear.

I finally have (sort of) a fix! If you turn on nvida instant replay or actively record (alt + z to access the menu) the artifacts go away.