10.12.6 Sierra GeForce 1060 lagging during gaming

Hey all,

I have a fresh install of macOS Sierra 10.12.6 and everything is running incredibly well. All native features are working, wifi, etc. I tried to play Fortnite a moment ago and the game was incredible laggy making it impossible to play. I know the graphics can handle it and am wondering if anyone has any suggestions. Thank you!