The acting, which has been frequently panned, looked pretty bad in the trailer but once you get into the film, it's really not that bad. The movie itself is pretty far removed from a snuff film, but snuff films are central to the story.
Yeah, it's pretty slow paced. But I've certainly seen worse. The two lead males (named Tom and Dan in the movie) end up being fairly likable and we're certainly rooting for Tom's wife and daughter to come out of all this crap the men got into unscathed. There are several things that I would've handled differently than Tom, but it's understandable why he tried to keep it all a secret...and then it spun all out of control.
If I listened to several reviews here, I would not have watched the movie at all, and that would've been a miss. I dislike when reviewers tell you "don't watch this movie, it's garbage." Everyone's got an opinion, and most opinions are just one point of view, so don't presume that nobody else will enjoy a film even when you did not.
Even if I hate a film, I won't ever tell people not to watch it. I won't proclaim it's an hour-and-a-half I can never get back (duh, no kidding). "Gut" is worth a shot. It won't be everyone's cup of tea, but for some viewers it's worth the time.