This has never been reported before, so it is logical to first suspect there is some problem with your computer and/or CD-Recorder.
We need more details.
Is your problem using Microstudio or Karaoke Home Producer (your saying "create" makes me wonder)?
Are you using the Microstudio Duplicate Disc Tab or the Custom Assembly Tab?
What discs are your copying... please tell us the manufacturer of the discs you are having problems with.
Tell us anything else you can think of releated as to how you are doing this, and what you are using to play that shows up the problems.
What do you mean "I've tried various speeds?" Please explain in detail because I have no idea what "speeds" you can vary or try.
