When I used a 5k LG, on the lowest scaling above 100%, I would get shimmering effects when I moved windows. You could see the same art/glyph rendered differently depending on if it was on an even or odd line; move the window 1 pixel and the text totally changed. If you only ever run at integer scaling, this wouldn't be apparent.
Windows does a Much better job with non-integer scaling because hairlines are 1px no matter what the scaling and text is rendered with pixel-hinting instead of macOS's new, lame strategy of super sampling.
Windows does a Much better job with non-integer scaling because hairlines are 1px no matter what the scaling and text is rendered with pixel-hinting instead of macOS's new, lame strategy of super sampling.