Frequent unpredictable crashes without any backups

I'm having frequent unpredictable crashes in audition. Quite often when this occurs Audition has generated no backup despite my settings showing that it should generate a backup every 3 minutes.

1. What were you doing when it crashed?
   Every time this occurs I am editing a multi-track session. I have usually just moved an item or made a cut with the razor tool.
   
   
2. What have you done since you last launched the application?
   I often close Audition in between sessions and before beginning a new task. So the last time I launched Audition I edited until it crashed.
   
   
3. If it crashes with a plug-in or a file, supply information about the plug-in or file.
   N/A
   
   
4. Has anyone else experienced the crash?  Anyone else on the forums, or perhaps a friend that also owns Audition?
   I have spoken to my team of editors and no one can replicate the same issue I am having.
   
   
5. Was there an error message?  Post a screenshot.
   The screen always shows the generic "audition has crashed screen" and asks me to submit a bug report which I have done several times.
   
   
6. Finally, let us know if Audition's Crash Recovery system or automatic session backups worked for you.
   I've set the autosave settings to save every 3 minutes, to the session folder, up to a maximum of 10000 files. Quite often Audition only backs up the session when I first open it and then it completes no more backups.
   
   System settings: