Slow blu Ray Ripping

I’m using Aiseesoft Blu Ray Ripper on an Late 2012 model iMac. It’s USB 3.0 the Blu Ray hardware is an LG BE14NU40 USB drive.

When ripping to iPad 720p HD format, I’m getting slow performance. It takes about twice the playback time to rip. So for 45 min of video it’s taking an hour and a half to rip. I’ve ripped regular DVD’s with the internal drive and different software and it’s usually about 1/2 time, 1 hour of video rips in 30 min.

Any suggestions? The drive is supposed to be USB 3.0. I also notice that the software only uses on cpu/core instead of using multiples like I would expect.