I have encountered the identical problem: specifically, connecting an external monitor with a higher resolution than a laptop's native resolution on its regular screen just doesn't work right. Text is blurry and horrible.
My current monitor has a resolution of 1920 x 1080 which isn't even close to what my Surface has. I want to replace it with one that matches the Surface, but it doesn't look like an exact match is possible.I do a lot of photo editing using Adobe software and I usually stay on the Surface for detail edits, but I have to adjust a lot of settings to get menus and panels to be readable. Then when I move the program to the ext monitor I have the change them back, because they are so large with the previous settings. So I can't drag my photo editors between monitors without a hassle.
![Find Find](/uploads/1/2/6/8/126893952/210973776.jpg)
Should I go with an Ultra HD; like 2840 x2160, or this that overkill? I just want to switch between monitors seamlessly, without seeing radical changes when I do.