Nenonovak,
I posted earlier, but I have new info.
After A LOT of testing we believe the issue is in the software. My Apple Watch 3 under normal use records heart rates just fine. Elevate the workout and for some reason the Apple Watch stops recording the heart rate.
I recently came across a piece of software called Zones. First, I am in no way associate with this software, so I am not a spokes person. I installed the Zones software and set it up. After several days of using the Zones software on the Apple Watch 3, I have not had a single data failure. As a matter of fact, I have been able to collect MUCH more accurate data than with the Health software provided by Apple. I have all the data funnel into a couple common apps on the iPhone and now I have complete data. The Zones app cost me $4.99, but it also fixed my issue. Workouts work great now, heart rate is complete and accurate, and I am able to see trend data.
Again, from what we see, the issue is not in the sensors, but in the software. The sensors are reading the heart rate, it is the software that is not compiling and transferring the data.
Just a quick update, but I do believe my issue is fixed...I just had to stop relying on the Apple software.
I hope this helps. Yes, it is very frustrating to hear that a $300 piece of equipment will do something, and then find out it doesn't. You shouldn't have to spend more money, but it is only $4.99. Come on Apple, either fix your software or reimburse us for having to use software that actually works.
