I can’t seem to solve this problem. Whenever I burn a CD… No matter what, it burns at 4x speed. I can tell the program to do 1x - 12x, but the measured speed still ends up being 4x. I don’t know what to do. I’ve tried flashing various firmware versions with the same results. I am having no trouble with read speeds, just write speeds.
Try enabling DMA for the drive. What OS are you using?