So.. I have a HP 24f monitor, spec sheet says 60hz but if you look a little closer you can see it does officially support 75hz. I go into Display properties, change my refresh rate to 75hz and the monitor accepts it, the blacks look a little odd but this is fixed by tweaking the black level in settings.
Now although the monitor accepts the refresh rate, and when I go to image info on the monitor it says it is running at 75hz, testUFO.com still only reports a 60hz refresh rate, any idea why?
I'm using HDMI and my old Acer laptops Intel HD Graphics 520 .
Thanks in advance.