Want to use my F5 to record my HR and to record training as an indoor cycle however all the readings in the app are two/three times what they are on my watch. It pairs really well but when my watch say 50bpm the tacx software reads 150+. I read somewhere you need to make sure you are running the latest FW on your F5 but checking in Garmin Express the only update was a GPS one which I ran successfully.
Any help would be apprecaited
