Rain is way harder to do with CGI than bright daylight. In fact, 3D software specifically has lighting tools that can exactly simulate sunlight with accurate time of day and atmospheric conditions. Rain simulation is more intensive and that combines with a bunch of other volumetric effects that are also slow to render.
What could he have done if he was smaller that he couldn't do at the size that he was that would make things cheaper?
What could he have done if he was smaller that he couldn't do at the size that he was that would make things cheaper?