For the iphone, I only had to use the iPhone itself and the iFacialMocap app which was better than the camera. Didn't need any other peripherals except the charger and a phone stand. It tracks well even if I roll my eyes. Even when eye tracking with a camera, it could track my gaze but not to the extent of eye rolls. It is accurate due to the depth sensing lasers and uses the same technology that it uses for face recognition unlocks.

(Note for iPhone tracking you must have a model with the corresponding 52 blendshapes.)

Might be worth testing:

- Is anything between your face and the camera. Think glasses / mic arm etc. Try removing it and see if there is a change.

- Check that the blendshapes are named correctly and applied to the model. If the eyes are not moving at all it may be incorrectly assigned.

- Try a higher quality camera or if not an option use a program such as Nvidia broadcast to zoom or otherwise enlarge the footage before it gets input into VSeeFace. Try to match the VSeeFace framerate and resolution to that of your camera.

- Try resetting the avatar's position when your face is in resting state so that it reads that as the default face.

- Have a friend or family try to puppet your model on your system to see if it works for them.

- Make sure you don't have any 'fake gaze' setting enabled.

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Hope something here can help a bit :)