Are you using a very dense resolution? I've turned off anti-aliasing, but if you scale your monitor to be more dense than natural resolutions it will appear quite odd. At "normal" resolutions it looks fine. I could turn aliasing back on at the cost of a bit of visual niceness for most.
Yeah, probably. I’m not sure exactly what the pixel density is, but it’s 1440 vertical pixels. Maybe try a resolution media query to toggle the antialiasing?