Comment by nine_k

IDK; it might as well be Windows.

I'm used to use DejaVu Sans Mono. Under X (Linux) it works beautifully and stays relatively readable down to 7pt; I usually set it to 11pt.

Under Windows 10, on the same screen with same DPI, I could not make it look reasonably in native programs like Notepad++; it stays blurry up until ridiculously large sizes. Emacs, which of course brings its own rendering to Windows, is able to render it somehow more crisply.

Conversely, Consolas looks wonderful under Windows, crisp and sharp. I could not make it render equally well under Linux.

And macOS is another land; it refuses to make fonts crisp if matching the pixel grid would change their shape even slightly. The only recourse is retina displays.

YMMV.