Baldur's gate 3 groups the resolutions by aspect ratio. I assume it probably queries the resolutions, computes the aspect ratios and then displays them grouped

Baldur's gate 3 groups the resolutions by aspect ratio. I assume it probably queries the resolutions, computes the aspect ratios and then displays them grouped them by it. This results in some weirdness with some weird ratios with huge coprime numerators/denominators but, as long as the right resolution is detected somewhere, you only basically need to do is select the right aspect ration for your screen.