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You will need to use the display port to get the 165HZ refresh rate. The HDMI ports are only 1.4 and limit the refresh rate to 144.
Sorry, there was a problem. Please try again later.Same problem here with a AMD machine 5900x and Radeon 6950xt. Won't allow adjustment over 144hz and very dim.
Sorry, there was a problem. Please try again later.When you use HDMI connection the max resolution is 144hz. You have to use the display port to get the 166hz.
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