Desolation of Smaug has this issue as well. The only time the film felt truly deep and expansive to me was when Bilbo first stepped into Erebor and you got to s

Desolation of Smaug has this issue as well. The only time the film felt truly deep and expansive to me was when Bilbo first stepped into Erebor and you got to see how massive the pile of gold was as it panned through the main chamber. Then it got closed up and tight again shortly thereafter. The few wider shots that followed reeked of bad CGI compositing (especially when Bilbo falls off the platform with the lever when Smaug knocks it down) I chalked it up to the cinematography just not meshing well with the way the film was shot.