There appears to have been an update to either Garmin Golf iOS or my watch software (Garmin S42 with C10 sensors) that is making the stats useless. 3 problems observed:
1. The green location on the watch and the app don't match so it is constantly wrong re whether you are putting from on or off the green.
2. When you enter correct number of putts on the watch and/or the scorecard they sync with each other but the shot maps do not update to the correct # of putts. It seems this would make most of the stats wrong.
3. There has always been a modest discrepancy (1-3 strokes) between my GHIN index and Garmin's estimate (I suspect because Garmin uses men's course ratings regardless of user's gender, as I previously reported), but now it is off by about 25 strokes. I suspect (as I previously reported as a course error) that Garmin is using an 18-hole rating for a 9-hole course I play regularly so it thinks I am playing 30 under par (nice!). My GHIN is 14 but Garmin thinks I am a +10. Interestingly now that it thinks I am better than a pro golfer, my shots gained results vs my new peers (pros!) has also dramatically improved! Nice!! But useless.