Apple Motion Wobbling Text in PDF

I animated a PDF page of Text created in Adobe Illustrator, exported as PDF into Apple Motion, and even though I unchecked "Fixed Resolution" for the Media, it animated badly. The text was all wobbling and unstable as I scaled up/down and moved around.

I was cursing Motion again, until I read the chapter on PDF (p.240) in the Motion User Guide:

Mixed Content Within PDF Files
Although PDF files can simultaneously contain PostScript-based art, PostScript text, and bitmapped graphics, all of these types of image data do not scale the same. PostScript-based art and text scale smoothly, but bitmapped graphics that are embedded in a PDF file are subject to the same scaling issues as any other bitmapped graphics format. As a result, they may soften if scaled larger than their original size.

Ah, ah! Spot on! I was using an Adobe TypeKit font. As soon as I changed it to an OpenType font... Perfect!

User beware!