I am interested to know if you have to turn OFF OHR in the watch to be able to use Wahoo Tickr HRM chest strap. I bought one and the heart rate is inconsistent, as I start on treadmill it reads on high side like 139 BPM and as I am right in to my run it starts reading below 100 BPM then jumps to high side, the charts are straight line of heart rate (same BPR) for few minutes at a time.
Curious to know if anyone else has same problem.