It’s that simple. What’s not so simple is the nuance and variability of getting it right. So many graphics cards, so many retina and non-retina displays and monitors, moving windows from one monitor to the other, plugging in and unplugging the second screen, it’s quite a mess.
AMD’s method or redrawing the GUI on a new or second monitor is weird, where everything starts at the top left. In fact, often the windows all get shoved to the top left in this scenario instead of a redraw in relatively the same place.
Maybe it’s just my Acer monitor? Plugging my XPS 9575 into my Acer 27″ monitor can take up to 15 seconds to get everything in its place. But then again, Windows doesn’t seem to remember the placement of the session’s previous layout with two monitors. If I have a full-screen editor in my laptop monitor with other browser windows on the secondary monitor (set as my primary), and then I unplug and later re-plug back in, that full-screen editor takes up the secondary monitor.
Moving windows between the monitors is also an annoyance. With the XPS high resolution vs the Acer’s standard resolution, the redraws that happen during moving one to the other can cause enough rendering issues that things get squashed, resized, and displaced on the destination monitor.
I can look past a lot of this but I don’t enjoy the experience of connecting two monitors together with Windows 10.