I have a Forerunner 965 and I have noticed that the heart rate tracking is always very different from reality, often getting stuck on a specific number and frequently being inaccurate.
During strength exercises, it almost never recognizes that I am doing repetitions; I need to activate it manually, and when it does recognize, it counts incorrectly. I've tried correcting it to see if it improves, but it doesn't!
After the exercise, the image of the muscles used is completely wrong compared to what was actually trained!
I'm quite disappointed with this new watch. I traded my 245 for it, and now I miss it.
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Is there anything else you need help with?