I would just say, "The action scene was a bit over the top." If the person hears that and thinks I didn't like the movie, that's their mistake. Your first phras

I would just say, "The action scene was a bit over the top." If the person hears that and thinks I didn't like the movie, that's their mistake. Your first phrase still leaves the door open for you not liking the movie and it adds no clarifying information.