Yeah I noticed that inconsistency in the videos, been looking into it. I thought I programmed the physics to be framerate independent, but Unity can be weird.
Ah, gotcha. To be fair, physics stuff is usually better off using fixed time for this very reason. This article is really helpful in understanding; maybe it'll be useful to you. The article discusses this from the angle of a different issue, but applying physics using regular deltaTime is impacted by framerate.
Great work, by the way, super creative!