What fields are not updating on your riding screen? I have the latest app (Android) and a 2016 S, and I display speed, charge, remaining range, battery temp and motor temp and they all DEFINITELY update while riding. How ACCURATE the figures displayed is a topic for another conversation, but they are definitely updating.
The speed displayed is almost always one or two mph lower than the speed on the dash. The state of charge usually matches or is one percentage point higher than what is displayed on the dash. Remaining range, however, tends to differ WILDLY; sometimes more, sometimes less than what is displayed on the dash. Being the pessimist I am, I always use the lower of the two numbers as my guideline.
I have no way of confirming the numbers showed for battery and motor temperatures, however.