I used Nvidia inspector to limit framerate to 140 Hz and enable G-sync indicator. When I'm playing fortnite, I see that the indicator states that g-sync is on, but I can still notice tearing on things like trees and streetlights. I have v sync turned off in game settings and when I turn it on, the game is limited to 60 fps. I'm using a displayport cable from my gtx 1070. It seems like either I'm missing a setting somewhere or my monitor's g-sync doesn't work. I'm not sure right now if it works in other games or not, but I can check if that could help solve my problem. Here's my application settings for fortnite in Nvidia control panel.