^Looking again @ x-step, the backswing and drive side load looks a lot better than it used to. I'm actually not sure I need a longer drive stride - that's maybe as long as my short leg will naturally stride while in leverage rocking forward. I think loosening up & just sweeping into a shorter plant stride like a ball kick maintaining a bit more "nose over toes" might do it. That should also help my head get fully balanced into the front foot when I land, I think.
I think really at this point if you're going anywhere with it, its just a lot more nitpicky stuff.
Your movement has good flow. But I can see how you feel slightly out of time.
I pointed out the head movement because you load up really good, then suddenly start looking with your head towards the shot before your body and the disc comes around, so your head gets ahead of the release.
Find something to blankly stare at while throwing. I find that when I am filming myself, staring directly at the camera helps me, But I have a far more vertical throw, so that's a bit easier for me.
I will say one of the things that you're doing that I started doing is getting the look at the target line before the backswing timing.
And man, it can help your rhythm and aim.
I go with "look at target line, when back swing brings head around, go neutral"
Then I try and focus on not driving with my head, but I do it sometimes still.
So many old habbits to break that want to creep in while you're doing this or that.
Which is pretty awesome with what you're doing.
You have so many less habbits to work around. And starting more towards building healthy swing habbits vs work out old ones.