File Audit - Dashboards stop showing/refreshing data

File Audit - Dashboards stop showing/refreshing data

Although I can see under the Alerts and Event Logs that File Audits are being processed and registered, when going to the *File Audit tab it shows old data events. 

It seems it stops refreshing the dashboards at some time.

Quick workaround is I have to restart the AdAuditplus service and it starts showing updated File Audit data/events.

I'm unable to find an error or significant event under Event logs of the server but can't find any.

How can I fix this without having to restart the service every few hours?

Regards,
J