Monitor Boasts 165Hz, but Refresh rate is locked at 30

SpaceDundee

Just got this monitor for Xmas and immediately noticed something was off when I plugged it in. My mouse is very jittery on this, compared to the older monitor next to it, and games I play have awful screen tearing that wasn't present on previous monitors.

I have an ACER XZ272 27" curved lcd monitor,

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I've already installed the latest drivers for the monitor and the official ACER widget, so if there's anything else I can do to make this look right, I'd very much appreciate it

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SpaceDundee

Update: I managed to up the refresh rate up to 60, but now there's a significant amount of ghosting when anything on screen moves