BenQ SW271
3840 x 2160 Pixels, 27"
BenQ SW271
3840 x 2160 Pixels, 27"
This may be because you have activated HDR mode (which happens automatically when you connect the screen to the MacBook). If this is the case, only limited settings are available. Had the same problem. Deactivate HDR+ mode in the screen settings, et voilà.