Check your documentation and see what it's maximum refresh rate can be. Typically lower resolutions allow higher refresh rate than higher resolutions, but there's also the top refresh rate a monitor can do. Sometimes you can tweak them a bit higher, such as a TV as monitor may be 60Hz, but at lower resolution like 1600 x 900 can run at 65 or 70 Hz.
I went into NVIDIA Control Panel and under custom resolution it let me increase the Hz and I raised it to 62 Hz and ran the test and I could still see the image on my screen so I was wondering if I should do this. What are your thoughts?

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