2 things. You are way more talented than pretty much any of my gymnast friends I personally know. Well, probably. Anyways.
1. are you compressing your heels as close to your butt as possible in your tucking. you are flexing your feet but I do that too sometimes.
2. you are stepping across your center line in your round-off. this mucks up your round off a bit i'm sure as you have to reach to the side a bit.
Awesome to watch. I bet that elevation sucked big time and you nearly hit that vault during training.