I have a plextor 716A that I've transferred from my old computer. I thought that my slower burn speeds were due to a slow system but now I know that's not the case. I get only 8x max burn speeds when I should be getting higher. I am using verbatim media with azo and also sony media. I have even defragged the disc, and nothing else is running on the same ide. When i try to burn at 16x, the drive speeds up to about 8.8x, then it always drops down to about 7.9x and stays there until the burn is complete. What gives?