I picked this up at Best Buy yesterday.
It proved impossible to change the resolution, or anything else. The windows control panel only showed the crudest settings. But the application included was the biggest joke. The only option not greyed-out was “check for updates”. Once I did that, and restarted twice, I could still only “check for updates.” All the adjustments were disabled.
Two messages to tech support are still unanswered, 24 hours later. So back to the store it went.
I replaced it with a model by AOC, which works right out of the box, thank you very much.