Here is a Test Video I did some time ago , nothing cleaned.
Morphs are looking nice , only the "Facial Bone"  jitters a little bit when the mouth is closed , but you can clean up by deleting the "Muscle Keys" at the parts where the mouth is jittering.



You also have a Smooth Head function in the settings :



Whats missing is a Curve Editor for facials , that's what we are waiting for.

You also can clean up or fine tune the facials in Unreal Engine , or any other 3D App with Curve Editor :




For me the Live-Face Recording works great  , happy with it !