>>544083170
Check the Dynamic Face Control options in Brio, they'll work even if your character's animation speed is set to zero, but they won't work if the character is frozen.
Sometimes moving certain bones yourself like the neck and head might offset what the tool considers "facing the camera", in those cases I found you'll have to manually adjust your eye position, which can also be done with Brio's Face Control under the "Position" option instead of "Camera" if you'd like.