They are all inherited from the rootcontainer than ...?..if not than it seems that you must make a separated tempo snapshot for each container seems to me.
i dont want to make a snapshot because i dont want the content of the root container. its not very time consuming to change a few containers but if you had many containers it would become an issue.
You have to clear the parameter "Tempo" at the 8 underlaying containers. Then the parameter "Tempo" which you have defined at the rootcontainer comes into effect.