It sounds like DVDFab is compressing the contents of the Blu-ray, meaning the output is selected as BD-25, BD-9. BD-5, etc. Compressing a BD is a very processor intensive task, and you’re using a laptop am I right? Laptops tend to not have the greatest GPUs, and Fab will utilize this if it’s available, but I’m guessing it isn’t. This would cause your compression times to be so high. I think my times are usually around 1 to 2 hours, depending on the movie with a geforce gtx 260 core 216 SC and a phenom II x4 945. If you have selected the BD-50 option and you do not want to compress the movie, and it’s taking that long just to rip the disc as-is, then click on the little green checkmark at the top of DVDFab and go to “General” then make sure “Check for DMA automatically” is checked and click on the “Reset DMA” button. I would also try updating the the latest beta release, which is 22.214.171.124 to see the result. Thanks.
Edit: Also, click on the little green checkmark at the top and go to A/V Codec Settings and report everything that it says there.