This is some damn good tremolo playing! I was expecting something a little more uncoordinated, but I dropped this in Logic and these are legit sixteenth subdivisions at 220. In other words, these are not simply “as many notes as I can play, regardless of tempo”. There is possibly a little drift, off by a note at some point - but that can be corrected.
There are probably a lot of players right here on this forum that would like to be able to do what you’re doing here. So your feeling that this can’t be used for musical purposes, I would disagree with that. Whatever your mechanical form is here, it’s a great start for adding two-handed synchronization.
I would try developing two-hand synchronzation with this movement, using chunking methodology, accenting the downbeats. I believe you said you worked on the Yngwie six-note pattern, and something was painful about that. You should never practice with so much tension or for so long that you experience pain. But there is also no reason to throw away this movement, and use the super slow deliberate method which seems not to work as well. You have already found the path of least resistance, and now it’s time to follow it, even if it is sloppy at first.