The 3*s I'm giving Runner Runner are for the location and the concept, this could have been a really great film but is completely let down by a incomplete script, poor direction, cinematography and wooden acting.
The Opening 10-15 minutes of the film should have been Timberlake's character back story leading to the point where we actually open. There is absolutely no chemistry between Timberlake and Arterton, Affleck proves once again how he's able to be out-acted by the most inanimate object on screen, and I saw the film less than an hour ago and have already forgotten everything the FBI agent did.
Due to the poor script you have a total lack of empathy for anyone, you actually don't really care if they live, die, go to prison or get away. My biggest concern was if it actually was Deadmau5 DJing at the Doctor Parnassus themed party or just some dude in a similar hat.
Also, the jargon used throughout the film means absolutely nothing to anyone with out a financial and IT background.
If you want to watch a good film about someone trying to pay for their university education watch 21!