The big save with this run is the use of microwalk heavy headbutt from round start. Additionally with good charge partitioning you can barely slip in a super/ultra. You'll see that I set up the headbutt starting from df, hold f a few frames, then snap to ub HP to do the move while starting my ultra charge. It saves about 2/3 seconds total when applied to trials 3,5, and 19. I also made some movement optimizations over spabobin's run on 14 and 21, and opting to focus backdash on 16 for consistency.