Those videos look like they're all using a Power Drive? That deliberately has higher dispersion as a trade-off for extra power. Which honestly makes sense to me, as in risking being less accurate by trying to hit a real golf shot as hard as you can?
Also your shots are all overhit, and not by the same amount. Which probably adds to the variability you're seeing.
I know you want to see zero variability but there are variables you control here that you haven't, plus there is deliberate additional variability as you know (but don't like).