I have been spoiled by watching non-American movies. I used to say European movies, but movies from South America, some parts of Asia, and even Mexico are now as good as European movies. What movies from other countries often have that American movies almost never have is subtlety. Whether it's comedy, drama, suspense, sex, or any other genre, American movie makers assume American audiences have to be hit over the head with whatever they're watching or they won't get it.
In this movie, for example, when Son catches Dad with Girlfriend in Hotel, then when Dad and Son catch Younger Gay Son in Cabin, EVERYBODY has to overact, so that the audience will be sure to get the point that bad stuff is happening. Why, oh why does Hollywood think we're stupid? Is it because we are? Maybe. In any case, this movie's drama is far too heavy-handed for me.
In less than ten minutes, I already know everything there is to know about these three characters, and I'm willing to bet the "twists" other reviewers rave about are the same oh-so-predictable "twists" Hollywood has been delighting noise-deafened, brain-dulled audiences with since Witness for the Prosecution 60 years ago. I'd much rather have to take time and figure out for myself what's going on between characters than be hit so hard by the director and actors with such a heavy drama hammer that it leaves me reeling and nauseous.