Thank you for your kind words! 
I can basically execute this motion on command now although it seems to build into a nice comfortable flow after a while. I think I would be quite nervous to try it in a live setting in between riffing, hard to say though until I actually try it!
Might be a little bit of red light syndrome in both circumstances, filming and playing live. Either way, still some great advice 
Lol it’s no secret I’m a big fan of qwerty’s and this form of @Jacklr’s does indeed remind me of his. The floppiness of Jack’s ring/pinky on his picking hand are another indicator it’s similar. That means the only tension here is the ‘good kind’, just enough to hold the pick and everything else is nice and relaxed.
I don’t think I’d even be able to play smoke on the water in front of Troy lol
Brilliant @Jacklr - I had a feeling you would have got this.
Ultimately do you think there was one major breakthrough for you - or do you feel it was a combination of things that came with practice you listed above?
It looks effortless for you!
Thanks!
The big things for me were adopting an open trigger or angle pad setup, using the bit between your middle finger nail and finger tip grazing against the body of the guitar to help guide your pickstrokes and initially using a more floating arm position as this made forearm rotation easier
Once you have that general setup you need to try and apply it and see if it works (it probably won’t straight away) and tweak it until it does.
The end tremolo section of Highway Star made perfect practice for this sorta thing. It combines two things Troy suggests into one being, find a working tremolo and apply it to musical piece. I also found that Highway Star section to be a sweet spot for learning this motion - sustaining 173bpm 16th notes for 30 seconds straight with no build up of tension was a great indicator of having a motion that works, you don’t wanna brute force this sorta thing and be gassed out by the end of the section.
The majority of my initial practice was spent with that solo section as playing along to something and having direct audible feedback if what your doing is working is really invaluable as there is no faking it.
Hope that helps
Thanks for response! I have it up to recorded speed now - not quite as fast as your version above. Interestingly the tempo on the recording (from what I can tell) drops slightly during the opening 6’s section of the solo. The song tempo is listed as 127 - but I have it dropping to 122 during that section and then speeding back up to 127. Interesting. I reckon Yngwie could easily play it at 127 and higher - but perhaps this adds some variation to the song which is nice though slowing it?
I’m learning some parts of the rest of the solo - it is amazingly composed! Unlike anything I have learnt before. It leaps all over the place and traverses a wide range of phrases. Amazing.
Been working on some DSX wrist, taking a lot longer then I thought it would! The biggest obstacle has been learning to start on and accent upstrokes (though actually trying to make it work instead of just starting on downstrokes really unlocked the motion for me), it’s clicking a little better today so I thought I’d share a progress video
Single string stuff is feeling pretty good now, I can recall the motion basically instantly and I’m just starting to work on switching 6 note patterns between strings, the hand positioning changes a little and it’s not yet automatic but it’s coming along nicely!
Wow you’ve got more than 1 efficient (and great looking) motions! Well done!
Thank you
Really like the feel of this one so far, tried using it on some famous riffs and applying a helper motion feels way easier than with my USX motion. With DSX it just feels like a small flick of the wrist whereas when I try to do it with USX it feels like my whole forearm wants to shift position - really clunky!
Killer! Are you doing RDT wrist motion here?
I’m not sure, I’m not too familiar with the the DT and RDT terms and I haven’t watched the new content about it yet!
If I would have to guess I would say yes, the motion doesn’t feel too dissimilar from my wrist/forearm motion and I believe that was RDT. When I was trying to get the setup right I watched Troy’s video on Al Di Meola a lot which uses a 2:00 motion and I think that’s what I have here
I’m not fully up to date on the RDT wrist movements myself just yet either. So I wouldn’t be able to differentiate it by sight, I was just curious!
Sounding great, looking forward to seeing your progress with this motion 
Been trying to get some finger joint motion going, not entirely convinced this is correct but it can go quite fast and doesn’t tire out. I was hoping to see more Yngwie style thumb wiggle but maybe that will start to show up as I learn to cross strings. What do people think? 
I think you’ve got enough motions now and you should leave some for the rest of us! lol!
Joking aside I think that looks like a great start. Maybe even more than a ‘start’ lol! Well done, once again!
I think you may be doing this inherently, but I thought (the AMAZING!!!) Chris Brooks’ explanation of this was super interesting
Haha, thank you! 
I’m not sure I am, I really tried to do it Chris’ way because he has one my favourite picking techniques but I couldn’t figure out how he gets any speed that way! I think mine looks a little more like Ohmura’s motion but obviously he is light-years ahead of me 