GPS fix times and possible memory leak

[Tron]

We have a custom board with nrf9160, ncs 1.2.0 and modem fw 1.1.1. We experience strange behaviour with the GPS: As an example,on units with 30 min fix intervals, we experience the following with units in the field: 

1. In the beginning, the unit has fix times of roughly 2-5 secs, with the occational 30 sec fix time
2. When the unit runs and have sent roughly 500 messages, the fix times are increasing, and often passes 1 min
3. After roughly 1500 messges, we see that the GPS takes a fix every second try, and when it takes a fix, the fix times are longer than a minute.
4. When the user resets the unit, we are back to point (square) 1. 

For us, this looks like a memory leak in the GPS modem fw. 

Yours, 

Tron

[Øyvind]

Hello again,

As the device is in the field, are you able to do a modem trace to show the issue?

Are you sure the issue is with the GPS, are you seeing this in the timestamp of the GPS? Please verify. Just to make sure we're not looking in the wrong area, we need to gather as much information as possible. Can you provide logs?

Thanks!

Kind regards,
Øyvind