I've always found Windows's font rendering to be subjectively "off" in a way I couldn't really articulate. I'm not enough of a typography expert to explain what I'm seeing. Text display just seems beautiful on Mac and a half-assed afterthought on Windows.

My big problem with Windows HiDPI support is that they still can't seem to handle multiple monitors with different DPI sensibly. I have a 5120x2880 display as my main display and 2560x1440 displays on either side of it. Dragging windows from one display to the other is janky and sized wrong during the dragging. Doing the same thing on Mac just works as you'd expect. How can Microsoft still get this so wrong?