I've managed to set the weather and climate settings for the interior. The main problem at the moment is the fact that any objects which are placed even a little distant from the player are not displayed ingame. To be more precise: I'm creating a hovering platform above the clouds. In order to make that look appealing, I have to place some of the cloud statics around and below the platform. But since the objects don't even load once they exceed a certain distance from the players position, they're invisible.
Any ideas? LODs don't work, but there's got to be another solution...
You mean they're clipping because their very far away? You can set the Clipping Distance (Clip Dist.) in the lighting template for your cell. Make if you're using a vanilla template, not to actually edit the template. Instead, uncheck Clip Distance (at the top of the window) so you can edit that area, then enter a much larger number (In game units) so objects are visible from father away.
Just don't make the area too big. It sounds like little optimizing could be done in such an open area, so it may quickly get slow on some machines. Keep that in mind.