Steam Bremen-oldenburg +br101expert (bpmmbdzf 286.1) Speedometer Failure About Halfway Through The Trip

Hello everyone.
I'm testing this locomotive (Bpmmbdzf 286.1) in timetable mode, and every time my speedometer stops working about halfway through the route. It's always related to stopping. Whether at a station or at a red light. After starting, the speedometer shows only zero, both directly in the cabin and in the graphical interface. Does this happen to anyone else, or am I the only one? I know it's nothing, I can finish, I'll even get a medal, but I'm not collecting points or medals, I just want to ride with the train, and if possible without complications...
Thanks for any responses.