> It seems that tracking the genetic mutations would provide an approximation of the computing complexity needed.

How are those two even approximately related?

1. If you want to know about the amount of information inside of our genome then you can just look at the genome directly. You don't need to count the number of mutations.

2. A genetic mutation isn't a computation. It's a random event.

3. Why did you choose a 500,000BC goalpost for anything? Which 500,000 genome do you want to look at? Almost all of them are not-conscious

4. There's no reason to assume biological evolution is an efficient method of manifesting consciousness.

5. Is a genome enough for consciousness? I would argue we would be less conscious without language, which exists outside of our genome.