Using Source-Nexus I/O and Source-Nexus Review in Pro Tools With Low Latency Monitoring Enabled
Low latency monitoring mode in Pro Tools disables plugins and aux sends on any record enabled track and also removes the signal going through any record enabled track from its mix path. Therefore there may be issues using low latency monitoring mode in Pro Tools if you need to send the record enabled track to a connection or broadcast.
Alternatively, if low latency monitoring is critical to your playback, a low hardware buffer size can be used.