I have a 2019 MacBook Pro running macOS Monterey and a DELL S3422DWG monitor (3440x1440).
I created a new profile with this resolution and left the default options checked (Retina, HiDPI and Unknown1). After restarting my Mac and selecting this resolution, things seems unchanged. Text is still pixelated.
So, what are those Unknown1, Unknown2 and Unknown3 checkboxes? And what is the difference between "Retina" and "HiDPI"? Should I leave all this options checked?