Comment by teraflop

Yeah, it looks like the font is scaled slightly wrong along the x-axis, so that the displayed pixels don't quite line up with screen pixels. Specifically, the text is rendered about 0.5% too narrow, causing a moire-type pattern that repeats about every 200 pixels.

Adding this custom CSS rule seems to fix it for me:

    p { transform: scale(1.005, 1); }