Obvious nonsense. Humans cannot compete with computers in speed, and computers do not compute at the speed of light (electrons have mass).
And it takes time and space. Is it made of nature? How? How does science define it?
Is this a “god in the gaps” argument? If science cannot currently explain something, it must be a god who did it?
Actually, physicists are fairly convinced that no new physics are necessary to explain “minds”. It is the details that are missing.
What about "sleep"? We dream of the past or the future. Or we fly. And has no place and time. What is the scientific justification that sleep is of nature?
I can think of something that doesn’t exist. Is that proof that my mind is supernatural? Likewise, I can dream of a past that did not exist, and I can dream of futures that will never happen.
When you can show that the mind actually can dream of something that will happen, or it it can dream of something real in the past that it could not know, and it is all not a coincidence, then you can come back.