Dvr-108 as external drive burning slooooow

I have the dvr-108 as an external drive. I’ve tried several programs to burn and they all take forever…and I literally mean forever. I decided to let Nero run and see how far I would get. I’m at 9% after 3.5 hrs. I have the 1.18 firmware on it. I’m using Ridata 8x dvd+r media. Any thoughts?