More refactor and performance fixes

utils/commands.lua

@@ -79,12 +79,11 @@ Global.register(
     this,
     function (tbl)
         this = tbl
-        for _, command in pairs(this.commands) do
-            setmetatable(command, Public.metatable)
-        end
     end
 )
 
+script.register_metatable('CommandData', Public.metatable)
+
 local function conv(v)
     if tonumber(v) then
         return tonumber(v)