Hey there! I've added a lot of your decoration items to the whitelist of the ADC.
However, several items currently cannot be used, because the material is missing the "Used with Instanced Static Mesh"-Flag.

I've compiled a list of materials that need that flag set for them to be compatible.
https://cdn.discordapp.com/attachments/719086657852276746/864234868446855228/message.txt

It would be awesome if you could update the materials :)