Over the past 24 hours we have seen delays in segment calculation for certain segments. We have identified that this is an ongoing issue and is the result of performance issues with one of our segmentation clusters. We are currently in the process of rolling changes to this cluster and hope to see segmentation calculation times return to normal soon. Sorry for the inconvenience. Our Operations Team continues to monitor. If you have any questions, please email us at firstname.lastname@example.org.