I actually can't imagine what it will do for video gaming. Maybe enhancing cut-scenes, but then why can't they just do the performance and rendering using the gaming engine in realtime?
For example in Train or Truck Simulators, I see examples where someone has put effort into making that farmhouse in the distance nicely detailed, but other times it's just a simple structure. If AI were tasked with "distant details", the whole game could look more polished.