Regardless of what speed I select in Nero, the drive burns all my Sony DVD-R 16x SONY16D1 at 20x ever since I turned used SMART-BURNto read what speed it can burn at. I’ve tried turning it off, but it continues to burn at 20x. My Verbatim 16x DVD+R MCC004 discs burn fine at whatever speed I select, but I haven’t tried to use SMART-BURN to see what speeds it can burn at yet after what happened with the sony discs.
I don’t think it’s the fault of the media either; the Sony DVD-R discs work fine on my other Memorex drive.