Right, got it. My initial thoughts, on re-reviewing your video, is that your right arm is floating, which can make the picking more difficult. If you add a supporting point (e.g., pinky of picking hand anchored to the guitar base, or perhaps the heel of your hand firmly near the bridge per Molly Tuttle), then you’ll have a good point of reference.
Can you give me the tabs and fingering you’re using? I don’t play this style myself yet, though I’d like to, and I’d like to try out exactly what you’re playing before offering any substantive thoughts. If you take a few moments to tab things out here, I’ll spend time on it. Cheers! jz