Do's and Don'ts of pre-computed GI

I've been following the beta for some time and I'm getting pretty good results from the pre-computed GI. But what are the limitations? My scenes are retilivitily large and I keep continuous baking off. I think I remember reading that I cannot add/remove geometry or load a scene additively, but I cannot find that source now. So what can and cant be done with the pre-computed GI system? Thanks.

 

(old post, i've worked through much of this)

 

Hey, your original question was way too broad (I remember seeing it originally and thinking, I don't even know where to start), in general people are more helpful if the questions are more specific.

 

Yea, and how great would it have been if I got a full answer to that question. But I know, I was asking for a tutorial :/