The bad thing is, that it also loses the GPS signal in Mission Planner. I took a look at the "Full Parameter List" in Mission Planner and saw, that I can change the GPS protocol to NMEA. As this gave me stable and good signals in u-center, I configured the M8N again in u-center to the out protocol NMEA with a baudrate of 38400 at 5Hz
. pydrt32dcd.pages.dev/445pydrt32dcd.pages.dev/304pydrt32dcd.pages.dev/100pydrt32dcd.pages.dev/198pydrt32dcd.pages.dev/440pydrt32dcd.pages.dev/311pydrt32dcd.pages.dev/281pydrt32dcd.pages.dev/423
gps no fix mission planner