Hi 
I could not enable HiDPI resolution on my 4k display with my MBP Touchbar (15'') nor my Mac Mini, about two months ago using Sierra.
Because I was able to enable it (1920x1080 HiDPI mode on 4k display) previously, and because of this:
https://www.macrumors.com/2016/09/23/loss-of-resolution-scaling-macos-sierra-update/
I think it is (or at least was) not available on Sierra, Is it back with High Sierra? (I am ready to tweak things up)
Thanks
I could not enable HiDPI resolution on my 4k display with my MBP Touchbar (15'') nor my Mac Mini, about two months ago using Sierra.
Because I was able to enable it (1920x1080 HiDPI mode on 4k display) previously, and because of this:
https://www.macrumors.com/2016/09/23/loss-of-resolution-scaling-macos-sierra-update/
I think it is (or at least was) not available on Sierra, Is it back with High Sierra? (I am ready to tweak things up)
Thanks