Great clip! The speed sounds fluid here.
Don’t hate me, but… this looks like mostly wrist movement, not forearm. A higher frame rate video would help, but you can verify this yourself without a camera just by looking at the path the pick travels when you play a pickstroke. If it tends to follow the pickups, or approximately follow the pickups, the forearm alone can’t create that path. The forearm rotates on its axis, so the the pick will move in a plane right angle to the way the arm is pointing. This will generally make the pick cut across the pickups. The wrist can make a windshield wiper-like path, or a more pickups-parallel path if you use flexion and extension. Any path other than these three pure paths represents a blended movement of forearm and wrist. In other words, when you want to understand your picking movement, don’t look for moving body parts, look at the way the pick is moving because that tells you what movements must be used.
Anyway there is nothing wrong with wrist movement, or forearm/wrist blend. They work great. From the clip it looks like there may be some occasional hiccup in there, like a periodically more aggressive forearm movement, or a blend between arm and wrist which is changing. Or it could be the camera frame rate. If you get a chance, do a shot in 60p or 120p if you have it, near a light source like a window that gets (non-direct) sunlight.
If it is indeed the case that some of the notes are being played with different movements than the others, that’s good. That’s a nice concrete thing you can work on, i.e. making the movement consistently one blend or the other. And that will pay dividends in smoothness.