Yeah, thanks. I do remember that.
As you can see, it does not seem to be a problem with this loco - though this is an old decoder.
The video does not really show a gradual speed ramps up from zero to normal operating speed. Besides, that is something you have to witness in person as you slowly turning the speed knob and watching the model. The reverse speed changes are very slight but noticeable. Would be hard to observe as a 3rd party in a video. Anyway, since it works well for you, all is good.