Well, if you're at 4k and so am I, my screen shot will look the same as yours does when it's viewed on your 27" display. 4k = 4k. But my display is 32", so the dot pitch is a bit bigger than it would be on your 27" display. That's the difference. I also have my display mounted low and close - the bottom edge of the display is 29" from the floor, and 30" away from my eyes. I don't have it mounted up high on a shelf, there's not a console or a bunch of control surface junk between me and the display, it's just the music keyboard (a thin and shallow M-Audio Keystation 88es), a Mac keyboard, and about six inches of empty space between me and the display. I did check out Logic X on various sizes of 4k displays before I bought the one I have, and I figured that a 32" display had the smallest dot pitch that would be workable for me. I might switch to a 43" display, but it's physically so huge that I don't really like it, although it would allow me to mount it further away. I was over at Reinhold Heil's place and he's got an LG 43" quad-client 4k display that he got at Costco for around $600, and he loves it. It's pretty much the same as the Dell 43" 4k quad-client display. But I really like my minimalist setup and don't really need to clutter up the desk surface with Mackie Controls and stuff, so I'm not in any hurry to get the huge-o-tron display. Some older third-party plugins look pretty tiny, like Waves L3, but it's not like there's tons of useful information being displayed. As long as I can make out the yellow numbers that indicate the threshold, I'm good. Three things that help sometimes: - Logic's plugins (and the latest Arturia ones, as well as some others) can all be re-sized, so that makes it easier to see tiny controls even on my main 4k display. 125% or 150% is usually enough for me - when I remember to use that feature. - The displays on either side of my center one are only 2560x1600, but are also 32", so the dot pitch is significantly larger. If I drag a plugin window to one of those displays, it "looks" much larger than it would on the 4k display. - In System Preferences > Accessibility > Zoom I have enabled "Use scroll gesture with modifier keys to zoom" and set it to use the Control Key modifier. This means I can hold Control and zing the scroll wheel on my trackball to instantly zoom the display, centered around the mouse cursor. I really only use that to blow up a progress bar to huge size when I want to sit across the room while I wait for a download to complete or whatever, but that's a quick way to zoom in on itty-bitty windows in a pinch.