I wonder if we should back up and make sure we understand your goals. What runs do you want to play and how fast do they need to be? Also, how are you measuring the ‘success’ you reported with the motion that everyone’s told you to abandon?
The normal flow of progress on CtC is:
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Find a motion that can go fast. Throw out all the ones that can’t go fast and concentrate on what you are naturally fastest at. The tremolo is the litmus test here
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Use that same motion while incorporating your fretting hand. At first this will be on one string, and it might even involve a ‘tremolo melody’. Meaning, you’ll pick each note several times before changing to a new note. That is coordination dependent and will vary from player to player. Either way, Make sure the picking motion is still the same.
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You need to make sure you’re fretting hand is capable of playing as fast as your picking hand. If it isn’t, go read some of Tom Gilroy’s posts
In particular, this one Efficient Digital Cycles -
Once you’re playing fast on one string, with good hand sync and doing one picked note per fretting note, you should start changing strings. Make sure the picking motion is still the same. You need to be aware of the motion’s escape too. So far you’ve been fastest with DSX so you’ll need to play things that switch strings after downstrokes.
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The final step involves melting everyone’s face

And just like @Fossegrim says, you can’t expect this happen in a short time period. Already, you’ve gone from showing us a motion that seems doomed to being slow, to one that’s moving at 16th notes ~160 bpm. And that’s the part that actually is supposed to happen quite quickly, so well done there. Troy’s said many times that most people, if they don’t have some sort of disability or injury, have the potential to move their pick well above even 16ths @ 200 bpm. After trying all the available motions and the table tapping tests, you should be able to translate that motion to guitar almost immediately. Within minutes for some people, but certainly within a few days time. Then the other stuff like hand sync and string changing…that’s going to take a while. But you have to find that fast motion! You can’t make an inefficient motion go fast. Just like you can’t gradually walk faster and expect to use that same motion for sprinting. At some point during the speed increase, the mechanics all change. That’s why starting fast is important. If a motion can go fast, it can’t be inefficient. You’re close to finding that fast motion, you just to refine it some!