It burns successfull, but only works sometimes

[Chrono]

I have this problem

I burn a ISO using discjuggler (version 2), I encounter no errors.
Then when I try the game in my DC it only sometimes works. If it works, it always works, and if it don't work, it never works.
I would first see the first startup screen, then the CD loads vigorusly for 10 seconds, then it goes to the CD player screen. If I try burning the same game again, it useally works most of the time. I change no settings or anything.

I changed no settings at all in DJ except the action from Write and Verify to Write.
Anybody else have this problem and can help?