Wall Composition - Changed methods to the FastAsyncWorldEdit (FAWE) API methods, Make sure you have FastAsyncWorldEdit installed. This fixes a lot of lag that came off of the crappy old method.(Will change back if block duping starts happening at player warps (certain chunks screw up in certain areas).
If your console is spammed out when using this updates wall composition features, visit your spigot.yml file, then set "anti-xray: true" to "anti-xray: false". The plugin is made on 1.8.8 so this should work (if you don't have the option and you are on 1.8.8 +, tough luck, as stated. The plugin has only been tested on 1.8.8.