This is not about removing those invisible walls that are left when you remove houses with spring cleaning that prevent stuff from being rendered behind them. This is about adding these objects to your constructions, because I may have overdone my Sanctuary settlement and now I have 20 fps when I look at my buildings. Is this even possible to do? add craftable culling walls and floors? (preferably visibles inside workshop mode) In case anyone doesn't know what I'm talking about, this secuence was taken from behind where the warderer house was http://imgur.com/a/WfPvF