I couldn’t find details on this so I would love if anyone has any insight or thoughts, but I’m wondering if these patterns could be from the simulation and computational limitations around generating true ‘random’ numbers (used in the simulation coordinates, vectors, velocities etc) ?
There are a bunch of apps that do this, here is one of the popular ones https://remini.ai/.
For more DIY you could use a comfyui or automatic1111 google collab or if you wanna go cheaper use a service like vast.ai and then search on youtube “face swap comfyui” or “face swap automatic1111” for a bunch of tutorials