If you are using your ORIA on a Mac with the Sonarworks app open, this can cause a drop in output level.
This is due to the Sonarworks app having its own output pad to ensure that any boosts applied to your speaker profiles do not push your output into clipping. This however can cause all audio from your Mac to output more quietly than expected.
To resolve this, simply export your profile to the ORIA, and then close the Sonarworks app.
To close the app you will need to locate the Sonarworks icon in the menu bar of your mac, right click this and select "QUIT" from the drop down menu.
Now ensure that you have selected the correct profile within the ORIA app and the volume should output at the correct level from your Mac.