Your monitor's refresh rate is determined by its hardware specifications and settings, not by the question itself.
Your monitor's refresh rate is determined by its hardware specifications and settings, not by the question itself.
He was referring to playing across both monitors. If you're only using the 120 Hz display and other services like Discord on the 60 Hz one, your game will keep running at 120 Hz. The system will also aim to deliver as many frames per second as it can—potentially exceeding 120 FPS if allowed. Unless you limit your in-game FPS or adjust settings elsewhere.