I cannot burn a playable disc at 8x... kprobe and nero cd-speed thinks the disc is BLANK (so can't do PI/PIF scan) and you can actually SEE the defects on the disc surface.
I have tried the stock 812 and 832 firmwares and I have tried the Codeguys 832 and the Codeguys Sony 700A (that's the one that's currently loaded). Media is MAXELL002 DVD+R which burns flawlessly at 4x using any of these firmwares, but at 8x makes a coaster every time.
Has anyone experienced something remotely similar? I don't get it... this media is available anywhere and the drive is known to like it!