I have a 4K Display on a Mac and I decided to go with 4x scaling (1920x1080) so that macOS can use Retina. Much sharper. My colleagues go with 2500x or so and I

I have a 4K Display on a Mac and I decided to go with 4x scaling (1920x1080) so that macOS can use Retina. Much sharper. My colleagues go with 2500x or so and I don’t understand how they can stand it.