I don't think that it's the energy of the acting that's jarring. I think it's the frequency of the cuts. This could be to cover up mistakes in diction (you only

I don't think that it's the energy of the acting that's jarring. I think it's the frequency of the cuts. This could be to cover up mistakes in diction (you only need to remember less than a few seconds of your lines at a time!) or just to hold the viewers attention with unnatural movements. One example of what you describe is GreatScott, a videomaker covering DIY electronics. He has definitely developed a more intense style, but he still gets through a paragraph of his lines without a cut. He doesn't need to turn his image upside-down to be engaging.