ill just go with the first couple of things off the top of my head. As already stated above, controlled 12nps stuff is pretty good already
Related to your statement about tension…learning to play fast with no tension is pretty huge. TBH, the way you are doing those licks (2 x1 rep then 3) may actually be working AGAINST you. I get the point of them for accuracy and control etc, but id say they might work against you as far as playing tension free.
Listen how hard you are accenting the last note every time etc. I get that there is a point to that as far as being sure of what you are playing etc, but id say you have these patterns grooved so now id rather see u work on longer loop type phrases
i like this one in 16ths, but it doesnt really matter as long as its something that will easily loop so u can play it continuously:
E–15–14–12-----------------------------------------------------------12–14 loop
B------------------15–13–12----------------------------12–13–15----------
G----------------------------------14–12–11–12–14--------------------------
obviously the Yngwie 6 note pattern type stuff is great too, like maybe loop back and forth between 2 strings with it and try to be light and fast and tension free
maybe come back down to, say, 70-90ish bpm, and play longer continuous loops and try to stay more and more relaxed. On occasion I do scales and stuff without the thumb behind the neck or just BARELY putting pressure on the thumb.
Then as u go to speed up, just keep that relaxed feeling
cant see your left hand much but maybe there is some loose finger flapping going on? I mean obviously we are nitpicking here but its just something to consider. You ever see Rick Grahams left hand?