You can set a different scale for each monitor, and it will remember it every time you connect it. Windows has improved a lot in the past few years in this rega

You can set a different scale for each monitor, and it will remember it every time you connect it. Windows has improved a lot in the past few years in this regard, and I rarely notice any scaling errors anymore. I have a Surface Pro 3 that works best at 175% scaling, and every day I connect it to a 27" 1080p monitor at 100% scaling. When dragging a window between the two, it will switch to the other scaling factor when it's halfway across. It works very well, so I'm not sure why it doesn't work for you. Maybe take another look at it? I have also experienced the pain of trying to setup Ubuntu on my SP3, and eventually gave up and went back to Windows because it was such a nightmare. Which is weird, because I seem to remember that Ubuntu used to support non-integer scaling factors in the past.