External USB 2.0 enclosure - blinking red orange light

I’ve got an 812S flashed to an 832S in an extenal 2.0 enclosure and when I burn any DVDs (vid or data) about 20% through the burn it slows down the burn and flashes red to orange. I can’t figure out if DMA’s on to solve this error since it’s an external drive. Any ideas?

It sounds like it’s only using USB1. Does the system, that you have it connected to, support USB2? Are the correct USB2 drivers installed? What OS are you using?