Since 2004's "Primer" - a way better indie film about messing with the space/time continuum - expensive gear and recognizable stars have had the same effect on film festivals as bringing nuclear weapons to a knife fight: Pretty soon, there's no knife fight anymore, just a lot of radioactive waste.
While the film doesn’t finally shy away from revealing whether Duplass is a mad genius or simply a loon, it downplays the question in favor of playing out the dynamics between characters (which is to say, Primer this is not).