I have recently gotten some degree of DBX picking to work. However, it caps out at about 165 bpm, and is very inconsistent/ “sticky” feeling at it’s highest tempo (in the same way string hopping feels). My understanding of the technique I am using is wrist deviation for the primary motion, and forearm rotation for string changes.
Here is an attached video of me doing the technique and the fastest I can. This feels pretty stiff and is inconsistent, but is the best I currently have.
https://youtube.com/shorts/21vyCWUkXzM?feature=share
https://youtube.com/shorts/fGlSHA7dGaI?feature=share