I have this drive and I am rather tired of it ripping a DVD9 dual layer movie at what looks like an average of 3x. Currently using the latest OEM firmware and I am aware that there are faster firmware's out there for different read speeds, but what should be a safe maximum speed for this drive?
I think 8x is average for DL.
Before you update the firmware make sure you have DMA enabled on all drives.What do you use to rip?If DVDDecrypter go to Tools->Settings->I/O tab and set Transfer Length to Manual/32kb.Then go to the CSS tab and disable Detect Mastering Errors.
If speed doesn't increase then update the firmware.