The IncidentPersister0.log shows Incident Reconciliation is taking 5 minutes to process an email incident.
Incident Reconciliation is designed to manage duplicate copies of emails, thus creating duplicate incidents. For example, a user sends an email through O365 Exchange to multiple recipients, cc's and bcc's. Incident reconciliation "reconciles" these to a single incident, avoiding multiple incidents for the same email.
It is not recommended to reduce the 5-minute timeout, as this could shorten the amount of time necessary to reconcile multiple incidents into one, thus having more than one incident for the same email.
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