The last three rides with my 4iiii power meter has had a lot of fall outs where there is no power recorded. I thought it was a 4iiii issue but today I compared the power data with power data from my old Gadmin Edge 800 (screen shot on the left). Now it is apparent that the Fenix 5 (screen shot on the right) is having the issue with the fall outs.
The problem is very new - maybe due to a software update?
looking forward to your response,
Best regards
Michael