I have 5,500 miles on mine and have noticed this same herky jerky motion at low speeds and a slight vibration at highway speeds that might be related?
The TSB that I’m aware of just came out in November, TSB 19-2331 its also a software update. Not sure it the one above relates to this one or not? Either way, I will be taking it in for the update. I know for a fact, it can take up to 500 miles and sometimes more for the relearn software in our newer transmissions to settle in. 😉