Whenever results are inserted into MongoDB (and they're not more than 1000 Documents), our CPU spikes up to 99% for a decent amount of time, despite data being already dumped in the collection.

Can't really provide much more than the WriteConfig we're using within, graphs wouldn't make much of a difference as you can only see the spike for half an hour more or less.

May this be something in the config we're missing out?

WriteConfig(databaseName = dbName,
            collectionName = collection,
            connectionString = Some(mongoURI))