Every projecte is different. I would bet anything that if you ran the same project in s4 the same thing would happen. Did you copy and paste your choruses? I think I know what is going on here. Gord ----- Original Message ----- From: neville To: ddots-l@xxxxxxxxxxxxx Sent: Wednesday, September 27, 2006 11:03 PM Subject: [ddots-l] II didn't have this problem in Sonar 4 I'm having a very strange problem with Sonar 5. When I have say more than 25 tracks, Jaws slows down and my audio starts to stutter. I'm working on a project with 39 tracks and when my project gets to the point wear all the tracks are playing at the same time, the audio begins to skip and stutter on the down beet of every 2 bars. Then on the down beet of the first bar of my last 3 choruses jaws will say drop out and the project will stop playing. If I hit space to continue or if I start from the starting point, the same thing happens. It doesn't matter wear I start from I will get a drop out in exactly the same place every time, on the down beet of the first bar of each of the last 3 choruses. Does anyone have any idea why this is happening? I did not have this problem with Sonar 4 at all. I could have as many tracks as I wanted and my audio would run smoothly.