Instinct Solar Run Cadence ZERO the pace isn't working

Since I updated to software version 16.00 my Instinct Solar Run Cadence ZERO the pace isn't working anymore. 

on the watch the pace stays -.-  but when I switch to lap pace it displays figures like 12:40 or so.

Run Cadence shows a ZERO line and the pace graphic has a lot of dips where (maybe the GPS was week)

It did work fine with Software: 15.40