[Drew_]

I'm pretty sure since Windows 8 Microsoft has focused on making font rendering look very good on high DPI displays at the cost of making them look poor on more traditional low DPI displays. Windows font rendering looks really good on 4K monitors and laptops with high res screens. Not so much on your typical 1080p-fare.

[mastazi]

Strange, in my experience fonts look better on Windows at low DPI, and better on Mac at high DPI. I guess it's personal preferences. To me, at low DPI fonts on Mac look as if they had rough edges. At high DPI however fonts on Windows look like the edges are too soft.

[emn13]

There isn't much difference between windows and macos font rendering at large scales - you can try it in something like browserstack, so you can compare two oses on one screen simultaneously. I mean, it's not imperceptible side-by-side, but edges certainly aren't sharper or softer on either.

[mastazi]

Yes, it is true that the difference between Win and Mac at high DPI is much less noticeable than at low DPI.

[mitemte]

Similar situation in macOS. Sub-pixel anti aliasing was removed in 10.14/Mojave.