MP70 Local GPS Stream

We have MP70s setup to local stream their GPS every 1 second. We are running into an issue were the GPS is not constantly sending it every second. When the vehicle is sitting stationary the GPS report could be every 3 or 4 minutes. I know the modem has a good GPS location when this is happening. Is this a bug or setting in the modem?

How are they set to stream their location?

We are streaming our location by IP- Ethernet. There is only one device connected to the ethernet network.