Before getting my Lionel ES44ACs, from the 2019 Big Book catalog, I saw a video on one of those units from the same catalog and in the video it was mentioned that the speeds steps are completely different from the previous runs of the ES44s. I myself noticed this issue with my ES44ACs. My Southern ES44AC was much faster then either of my new ES44ACs, in a lash up with the same speed steps on the remote. At first I thought they accidentally programmed it in as a switcher locomotive into the firmware. But setting it as a diesel switcher into the remote, and lashing the same units together, resulted in the same problem.
I can't say for certain if this is with the new release ES44ACs or if all Lionel Legacy units, with the bluetooth module main board, have these speed step settings programmed into them. So if someone has any Lionel Legacy units with bluetooth on board, can you test to see if they have any speed matching issues with the new ES44ACs? And if they do, please post videos showing that is the case.