Hello, dear Blizzard Technical Support forum,
Before I make a post here I tried to search over the internet about my issue, but even if I found some similar posts, I did not get my answer. Two days ago, I bought my new monitor (AOC (AG241QX) 23.8", 2560x1440, 1ms, 1000:1, 144Hz, Gaming Monitor), and I noticed that Nvidia supports that monitor (if u have the right GPU ofc, Gigabyte GeForce GTX1060 6GB G1 Gaming (GV-N1060G1 GAMING-6GD Rev 2.0) for the G-sync option. So I went to my Nvidia Control Panel to activate the G-sync. Since I am usually playing on Borderless Window mode, I had to pick the “Enable for windowed and full-screen mode”. I noticed though that the FPS lock to 60 whatever option I pick. Anything I pick from the option “Limit FPS” does not change the result.
Sincerely,
Mew
EDIT: SOLVED (I had to go to the Nvidia Control Center > Change Resolution, Refresh rate (right side) and change the 60hz setting to 144hz. I thought that, that setting was on auto but… no!! The Overwatch Reddit was very helpful ty!)