Try as you might, the only way you'll see 4K detail on a 27 inch monitor is to ZOOM IN. Liars have claimed to have seen it on laptop sized screens, but it's impossible with normal human visual acuity. So, in light of that, as some of us
have been saying for years, you need to go BIGGER to see the detail available.
Even at 32 inches, like this monitor, detail is visible to the extinction of vision, meaning, if you zoom in a tad, there is still more detail to be seen. Not until they hit 42 inches or so will ALL of the detail 4K is possible of showing will be seen at a glance with the eye. 8K? Forget it.
https://petapixel.com/2021/09/17/lg-launches-its-first-ever-oled-professional-monitor/