The displayed speed is an average of the entire ripping process
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trickart
Originally created by: JosJuice
CleanRip calculates the ripping speed by dividing the amount of data read by the time elapsed. This means that the displayed speed is an average of the ripping speed from the start of the rip up to the current point, instead of the ripping speed during the last few seconds. The current speed is more useful to see, and it's also what I would expect to see, because it's what most file copying utilities use.