DVD backup - Intermittent freezing with pixelating

I have been successfully backing up for years using RipIt4Me, then DVDShrink, then burning with DVD Decrypter. I normally just back up the menu and the movie, leaving off the extras. I use Taiyo Yuden DVD-R discs, and burn at 4x.

Recently I’ve noticed some of my backups freeze for a second or two, every 5 to 10 minutes in various areas of the movie, often moving in frozen steps for up to 5 minutes. The freezing also includes strong pixellating.

I know all of my software is old, and can’t be updated.

I guess my problems are to do with the newer copy protection now on discs, and I am very out of touch with current available backup software.

What program(s) should I change to, to solve my problem? Or is there something else I should be doing?

Thanks:D