Use CD/DVD speedtest to check your DL rip speed. If you get 4X, then riplock is removed. My NEC 3500 starts at 3.1X with maximum speed around 7.3X. The average rip time for the main movie with English AC 3/6 audio is 11 min. The rip time will go up to about 19 for the whole movie. If you compress the movie while ripping, then the processing time will increase, depending on the level of compression. I expect similar performance with the 3520 drive.
A fast DVD reader can reduce the rip time by another 5 to 8 minutes.