The neural network is good, but I saw crooked faces in some places. A neural network is a tool, not a way to push all the work onto it. So it's ironic, but you'll have to polish it for longer than you did before.
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Actually, I only use AI for minor touch-ups, mainly to add subtle highlights, shadows, or a bit of extra volume in tricky areas of the face. I also use it on hair quite often to reduce 3D rendering time. Overall, AI accounts for only about 5% of the final image. Everything else is done through 3D modeling, sculpting, and rendering.
That said, you're right that some of the older scenes from the first part of the game have facial issues, including some caused by my early AI workflow. I'm gradually reworking those scenes from scratch, so those problems will disappear over time.