I am certain that I want this topic in this forum because it has to do with round tripping. I am using audition 5.5 with PP6. I use the roundtrip to clean audio up and compress etc. But the process takes quite a while despite a fast computer (6core, 32GB ram, SSD for OS, raid array) Am I missing something here? How can I speed up the render and replace process? EDIT: I would add that the app is using maybe 15% of cpu. that seems a little slow.