[pavlov]

I think you're overestimating the processing requirements. The original 2010 Kinect did fundamentally similar processing (multi-person tracking and skeletal mapping) on the Xbox 360 which had a PowerPC CPU from 2005.

[ReverseCold]

Running neural networks is usually much easier than training them (computationally).

Was the Kinect even a neural network? I don't think it was.