>>djsumd+Sb
I'm often working out of a hotel and my laptop screen is my only screen. I can use the hotel TV but it's painful looking up-down-up-down. I can carry a portable external monitor but that becomes unmanageable when I need to pack light.
I usually prefer 2x scaling on a 4k screen, and then pictures and text are unscaled. I like being able to put a 1080p movie in the upper left corner and a reference webpage below that, then a big text editor to the right and 'work'.