Configuring reports every 5s may lead to GPGGA traces reported like this:
$GPGGA,211645.00,,,,,0,,,,,,,,*4D
$GPGGA,211646.00,4030.003988,N,00330.761876,W,1,07,1.0,691.6,M,53.0,M,,*74
$GPGGA,211650.00,,,,,0,,,,,,,,*49
$GPGGA,211651.00,4030.005405,N,00330.763540,W,1,07,1.0,688.9,M,53.0,M,,*71
$GPGGA,211655.00,,,,,0,,,,,,,,*4C
$GPGGA,211656.00,4030.008074,N,00330.765338,W,1,07,0.9,679.9,M,53.0,M,,*70
$GPGGA,211700.00,,,,,0,,,,,,,,*4D
$GPGGA,211701.00,4030.009258,N,00330.765510,W,1,07,1.0,678.3,M,53.0,M,,*71
$GPGGA,211705.00,,,,,0,,,,,,,,*48
Which is totally undesirable, as the GPS location would be flapping
between set and unset.
Use the default of 1s explicitly, which behaves properly.