And you are right, we should not include the startup time in the 15min. Will fix that :)
I realize that you're probably not targeting mobile, but just in case. :)
Edit to add output example: https://i.imgur.com/yflCAd9.jpg
The resulting image is much darker and more pixelated than my actual front camera. Given the difference between my face type and Nicholas Cage's (I'm fat and bald), I'm surprised it mapped as well as I did.
Notable failures:
1. Edge of face ("ghosted" edges with my actual round face protruding from the faked area)
2. Map mouthing (very difficult to change the faked expression)
3. Eyebrows (they don't seem mapped at all)
Notable successes:
1. Angle (the faked face is consistently angled when I move my face/head)
2. Complexion (no real skin color variance)
Chrome 69.0.3497.86
Android 9.0.0; Pixel XL Build/PPR2.180905.006
I feel like if I paid for 15 minutes, I'd feel cheated sitting there watching the clock tick down while it "starts the AI cluster."