Hello all, I've never asked for help on here before, but recently I started doing a bit of Fallout 4 modding and I've run into some confusing things. I've made a handful of Skyrim and Skyrim: Special Edition mods in the past (both published and private) and I'm very confortable using the Creation Kit, but I've never had to deal with things like "precombines" before. Anyway, I'm working on a mod that makes a variety of changes to the way radiation works. The first half of the mod simply changes the amount of rads picked up from various sources - from environmental sources, from creatures, and from food and water. I know I'll have absolutely no issues with this. The part that concerns me, though, is the second half of the mod, which will add potentially hundreds of new radiation hazards to the Commonwealth worldspace. I will try to avoid touching anything else or adding new objects to any cells, and I plan to avoid settlements and frequently-modded areas, but I'm worried about breaking something by accident. I'm slightly concerned about the potential effects that adding additional hazards and messing around with the worldspace might have on the mod's compatibility with other mods. If I was changing just a few cells, I wouldn't be worried, but I'm planning on changing possibly hundreds of locations all over the map. I also am not entirely confident about which types of changes WILL break precombines and which ones will NOT. My main questions are... - Will adding hazards have any effect on this, or is it totally a non-issue, as I suspect? - What about light sources, x-markers, or anything else that has a visible shape in the editor that doesn't appear as a physical object in the world? Will moving/adding these have any effect on optimizations? - How can I tell whether or not I've accidentally broken an optimization, and how can I fix this if necessary? - Will clutter and non-static objects be safe to move around, or should this also be avoided? - If I move something accidentally, will deleting the changes in FO4Edit also restore any potentially-broken optimizations? - Am I just being too cautious? I've done a fair amount of research already, but there's still a lot I'm confused about, and apparently I'm not alone in that respect. So I thought I'd ask just to be on the safe side! Thanks to anyone who can answer these questions! :laugh: