I have really weird problems with USX and DBX. You can read about some of them in this thread:
In general I do get better at USX but it feels like climbing a really long ladder and being able to move from one step to another once in a few months. For the last 2,5 years I’ve spent way more time than I’d like to admit trying to learn USX and I still can’t do it. I can’t even find a motion that feels 100% comfortable and my muscle memory refuses to save it so every day is different. I do have some moments of fast USX or even mixed escape but it always feels tensiony and I get forearm/elbow knuckle soreness trying to do it after a while.
So for me learning USX didn’t result in actually learning it. It taught me to be more pragmatic in my approach to developing as a musician. Now instead of frantically trying to learn USX/DBX I put most of the music I’ve written for the past 10 years on a shelf and I’m writing new music that I can play with my current technique. If I ever crack the code I can go back to the music I’ve always wanted to make but for now pursuing it is counterproductive because it may never happen. I’m currently learning a little bit about production and writing my own stuff, I do try USX once in a while but while keeping in mind that it may never happen and I should focus on different stuff.