I have a Dual XGPS150 bluetooth gps receiver. The Receiver out of the box is 1hz but they have a firmware update for it to make it 5hz which is what i did. The firmware update was successful, when i record with RaceChrono it says that is recording at only 1hz. Is it possible for it to be recording at 5hz but only displaying 1hz on the screen? Other than that the receiver works great with the app.
Link to firmware update http://www.xgps150.dualav.com/faq.html