Accuracy issues with GPS playing golf

I have done all the map updates from the website and the problem continues

The 2 clocks have exactly the same configuration, they both read in yards, the problem has to be something else. 

You ever figure this out? I was having the same issue yesterday when comparing with another fenix watch. Mine also was showing a plays as negative distance when the hole was 10 yards up hill...

Most GPS watches are only accurate to about +-  3 yards, which means any two devices are likely to differ by some amount.  As an amateur golfer if you can always hit a given club within a 10yd distance you should probably be playing on the PGA tour.  Laser rangefinders are far more accurate than watches but even then there will be a variance between any two devices - it's the nature of consumer electronics and their relationship to the different GPS satellite systems :-)