What's wrong with this movie?

Rating: 1/10 (23 August 2015)

1. Far far too long. Nearly 3 hours?
2. 50% of McConnaughey's dialogue totally incomprehensible. He hardly moves his lips so what he says comes out as a hoarse whisper. Didn't have that problem listening to Michael Caine, Anne Hathaway or Matt Damon.
3. Characters doing random things that had no logic. Why did Matt Damon suddenly attack Cooper?
4. That annoying thing where actors suddenly start explaining the plot. "We're approaching a wormhole. So, tell me all about wormholes". "Ok, this is how it goes...."
5. Mostly, the film was just boring. Lots of films last around the 3 hour mark and you need to have something to keep the audience's interest going. My interest lapsed around the halfway mark.