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Update: it's not actually a decryption issue as a copy of the backup plays fine on a different drive. It seems that the drive I was using is malfunctioning and possibly fragmenting the file so much near the end of the drive that the read speed is so low decoding can't keep up to maintain real-time a...

Created a decrypted backup of the recent release of "The Doctor 1991" (Kino Lorber) successfully without any notified errors, however when playing back the title there is a periodic loud click from the audio, periodic video pixellation and the video speed increases and decreases at times a...