The main thing here is that we can't just play the file back faster. That will just cause the data to progress through the file at a faster rate, and doesn't change anything about the rate the data is processed by your app. If you simply play a 1/sec FIT file back at 10x speed, you will just miss 9/10ths of the points.
To add this type of feature properly, we would have to make the entire simulator fast forward at the accelerated speed, including things like system timers and time of day, which is pretty difficult. We can just accelerate the data and the compute function, but that could cause issues if an app attempts to compare any times to the rest of the system.
