App server stops responding

[WillooWisp]

We have been using the LoRa app server successfully for a long period of time, but the last week we have been forced to manually restart the docker container several times after adding even more devices and gateways to it.

In one single occation docker logs for the container has shown memory problems, as below

=INFO REPORT==== 20-Jan-2023::10:34:03 ===
alarm_handler: {set,{system_memory_high_watermark,[]}}

, but otherwise it shows nothing at the moment when app server has stopped responding.

We have available memory on the host system, more than 1 GB free.

We have about 25 LoRa gateways connected to it and 300 devices. Is there a known limit of what the app server can handle? Any settings that can be tuned to make it work with many more devices?

Thanks!