QUESTION: fine, but how do you operate the menu bar? it sits very far to the left, in the top left corner, and the app SecondBar does not work on Big Sur. How does one move the menu bar to a more comfortable position, e.g. the top-middle.
Actually my 5120x1440 (PHILIPS 499) works fine on High Sierra and later, provided the laptop's lid is closed. But the Philips has more electronics in it than the others (though it uses the actual LCD of Samsung I believe)
I also operated that High Sierra laptop with two old Cinema displays, 2x2560x1600, which gave me 10% more pixels but split over two screens. Even with 10% fewer pixels, the single screen is more comfortable, provided I can move the menu bar to the middle.