Using Matrix3D in AS3 makes the object it is applied to blurry (this is a known problem).
There are some tricks, though, to fix this.
For example, there is a tutorial about removing blur from rotated bitmaps: http://www.flashandmath.com/flashcs4/blursol/blursol2.html. The trick is in scaling the blurred image and then setting its z to 0.
Unfortunately, I can’t achieve this with OpenFL. My objects remain blurry.
Is this a known problem, or could it be that I am missing something in my code?