Hi, I'd like to make the interface on my 1080p external monitor smaller. It's connected to a 2015 rMBP 15" basemodel, via Mini-DP to HDMI. On my internal screen, I can set the scale to 1920x1200 which is small enough for my liking. But on my external display, everything seems too big for me. I'm used to smaller text and icons and so on, but I can't seem to set it properly. The only settings I have for my external displays are the rotation and resolution settings. Resolution can only go lower, not higher (obviously). But I cannot change the UI scale there. Any way to do this?