Some of this has to do with the casting of two leads that aren't playing to their strengths here, as neither of them are known for quality comedic work. (qwipster.net)
The actress is best known for her scene - stealing comedic work on Arrested Development and Archer and... (collider.com)
There's an interesting casting dynamic within the film — with the two sons (you and Bob Odenkirk) primarily known for comedic work and the two parents (June Squibb and Bruce Dern) primarily known for their dramatic turns. (collider.com)