Who would be among those 5? Are these big tech? Or large corporates?

likely mag 7, big tech, megacorps like accenture, etc.

Someone doubled the bitcoin amount :D

It would be fun if many shipped in some $ for this to be a realistic bounty, but then again, OP could just take the money him/herself...

Why did you decide for the 5070 Ti? You will always suffer compared to the 5090?

I assume due to price. The 5070 Ti costs ~$1k, the 5090 costs ~$3.5k.

There seems to be no hold out data for test, so this is just overfitting?