Problem to get large config-file


I’m having problem to backup large configs from a Fortigate-device.
The running config on the device is around 25000 rows.
When running the Oxidized (integrated with LibreNMS) it is able to connect to the device through SSH and starts to retrieve the config.
But when the output file of the config, has become around 35 MB of size it stops retrieving the config.
I’ve increased the timeout in the Oxidized-config to 3600 secs (but the operation stops within that threshold).

Are you able to increase the threshold of the output files in Oxidized? Or might it be some there issues?