I have multiple projects and the volume levels are different on one. Most of my projects are with one or two instruments and they are quieter than a project I have with multiple layers of instruments. It looks like the volume levels are all the same in the mixer, master, group, and sound outputs for all the projects. Maybe I need to rebuilt all of my more simple projects and see if the volume will match the louder project. I thought that it should be the same volume automatically. Maybe there is a volume setting somewhere that got changed. Seems hidden to me.