Slow Burning DVD title



My Pioneer A06 DVD Burner Burns Data files fine (1Hour). However when burning an ISO image of a Title DVD, it takes Hours. My first DVD took 13hours. One I just left and it took 23hrs. The DVDs turn out fine. The graphic on screen show the DVD burn at 100% however the text at the bottom of the screen says something about finishing off borders or something.
Currently I am using DVD decryptor and the samthing. Except the text says Sychronising Cache. . .
Can anyone help here?
I have checked my DMA setting and they are correct