The number of lights in the scene strongly influences the time, so just try putting a light source in each stage (except in the bedroom where I put 3, and was slower).
My idea is to use these images (and more of the same house as I have) in a game, but I'm lacking, more importantly, an interesting argument, so I'm seeing if I can think of something. But I'm working on an idea.
here a video of how it would be more or less the gameplay of the game. The idea is that the scenarios are explored in 360 ?, but frame by frame. And the development of non-linear adventure, but you can freely explore the house for clues and puzzles.
http://www.youtube.com/watch?v=pbNWQOYfs3I
in the video images are not as good quality for the program I used for recording, but the quality is the same as the pictures in this post.
Thanks for the feedback.
PD: Google Translate XD