I was getting traffic spikes caused by modifying the poller interval. The issue has been resolved by converting the rrd files as described in http://docs.librenms.org/Support/1-Minute-Polling/#information
Component | Version
--------- | -------
LibreNMS | acaa29c583049ba31937e40e2b339bbc6851dab7
DB Schema | 190
PHP | 7.0.18
MySQL | 5.5.52-MariaDB
RRDTool | 1.4.8
SNMP | NET-SNMP 5.7.2
Edit: Issue has been resolved. The rrd files were not converted successfully. After doing that the poller intervals are steady once again. Now on to trying to remove all the outliers.