My VG27VQ monitor has a feature that can display the FPS on the screen. Whenever I have my second monitor enabled, the FPS is 60. Without the second monitor, it says 120 FPS. Is there a reason for this? The monitor is 120hz...

Is there a way to fix this? My graphics card definitely has the potential to supply over 120 FPS with the other monitor attached, for Minecraft's F3 mode indicates 300 to 1200 FPS during gameplay.

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1 Answer

As standard, many GPU's will set the same refresh rate for both monitors. So, once you plug in your 2nd monitor, the GPU wil choose a refresh rate which both monitors are capable of. So your GPU will set both monitors to 60Hz, and thus your primary monitor won't see more than 60fps.

However, given your GPU you should be able to change this: - Right-click on the Windows desktop and select NVidia Control Panel
- Click on Change Resolution
- Check the refresh rate and select the appropriate Screen refresh rate from the drop-down menu
- Click OK 
- Do the same for second monitor. Make sure the first setting is a multiple of the first, otherwise you might get weird results. In your case you should go for 120Hz and 60Hz (your second monitor can handle maximum 75Hz)
- Test your settings

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