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Motion Instruments is heavily constrained by their use of BLE. Transfer rates for BLE are actually quite low and would require them to heavily drop the average sample rate. I suspect they are probably using an algorithm like this: https://observablehq.com/@chnn/running-ramer-douglas-peucker-on-typed-a… https://karthaus.nl/rdp/ Which gives unevenly spaced data but with minimal lost of curve shape (information). On the app side they are...