Making fonts antialiased at all sizes

Since I updated to 4.x, my fonts between about sizes 10 and 15 have imported with no antialiasing. This isn't the look I want. How can I make a TTF font import at, say, size 15 with antialiasing?

Note that currently, very small and large fonts still antialias. It's just that theres a middle range where Unity apparently thinks pixeleriffic looks best.