term "torture porn"
It's something I have read many times in reviews of rather gory films like Hostel and the Saw series
I actually really enjoyed Hostel 1 and Hostel 2, and understood the function of the graphic violence in the Hostel films (the scenes in these films were just about on the max. level of what I could stomach) but found the Saw films uncomfortable viewing, especially the later Saw films, to the point of being an unpleasant experience