Antialiasing/movement of dynamic text

Related to a previous thread of mine, I want to use dynamic text in a MC that is moved around using AS.

Problem is, that dynamic text shows up unaliased and pixelated, and its movement in the MC is sort of lumpy and erratic. The AS function works perfectly well with static text, which moves smoothly and is antialiased.

Do I need to render the dynamic text in some way, or is there some other method of making it look more normal? Should I use tweening rather than AS to make it move?

Sample file attached.