DSX escape problems/questions

Hi everyone! new to the site and forum posting. Played a bit a long time ago. Picked up the instrument recently to start over. Haven’t really played in over 40 plus years! So, I’m basically a beginner. Trying to establish reverse dart DSX wrist motion as my primary motion (then add other technique motions for additional versatility if possible) My initial tabletop test results for the Dimeola type wrist motion found in the “testing your motions” section of the Primer seemed to be reasonable at about 210 BPM.
However, the best I could do a single string tremolo was sixteenth notes at about 132 BPM. After watching the Primer chapter again and doing the tabletop test again I discovered that after about 150 BPM other motions started to creep in. Above 150 BPM I start to get a supinated pecking motion and/or a forearm/elbow “push” assist that apparently allowed me to reach the faster tempo. My maximum tabletop test result when keeping the wrist motion more purely deviation is more like 150 BPM.
Has anyone else started with such low tabletop test and single string tremolo results AND THEN been able to eventually achieve the faster sixteenth note speeds desired and necessary to play the Dimeola/ Mclaughlin style licks? Are these results telling me that I’m wasting my time trying to make this my primary motion?

You’re a member, hence you can do a Technique Critique.

Thanks for your reply. Yes, I intend to do a technique critique soon. I’m trying to practice a few examples of standard 2 note per string pentatonic fingerings (which I never really used) so I can maximize the 1 min. limit. As I do this I was wondering if anyone else who eventually had success had the same experience. Seems like there are a lot of very accomplished players on the site that might have insight.