A dizzying mess

Rating: 3/10 (3 April 2016)

My partner and I saw this film on a whim last week while on vacation, as we saw it was playing at the local IMAX theater. That right there should tell you that we're not fanboys who were anticipating the release of the film for months, unlike some of the other (both positive and negative) reviewers. I have however seen many of the modern-era (1978+) live-action Superman and Batman films, but not, notably, Man of Steel.
Do *NOT* see this film without having first watched Man of Steel. I was completely bewildered for the first half-hour at least. I ended up watching Man of Steel a week later just to get a better understanding of what the hell was going on in the opening. I came away feeling the prior film was a much better movie, but seeing it did not improve my assessment of Batman v Superman at all; if anything, it made it seem even worse in comparison.
This film was almost nonstop action, which I am not a fan of even in movies that have comprehensible plots and solid characters. This film had neither, so I felt like I was strapped into a roller coaster ride without my prior knowledge or consent for two and a half hours. The Hans Zimmer score was good, but the directing and editing made the film nearly unwatchable, independent of the visual effects.
Besides the music, the only redeeming factors of the film for me were the casting of Affleck and Eisenberg as Batman and Luthor, respectively. Since I'm not a fanboy I had not read any prior criticism of the casting of either of these actors, both of whom I'd enjoyed in other films. I thought they did just fine here, given the limitations of how their characters were written.
My partner, who is much more inclined to like action films, couldn't stand the directing or editing either. We spent the whole half-hour walk back to our hotel talking about how bad it was. Unless there are drastic changes down the line, I doubt I'll watch any further films in the Justice League series.