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Take into account that when you spawn one object, you will also create all objects which are in the same container. So maybe, instead of keeping then in container, you should spawn each of the manually, that way you will have better control.
Also, instead of 4 separate spawn objects (like 01,02-04 in your example) maybe you can create just one, and then use condition "for each"
Also you could put them into family. Link about families:
https://www.scirra.com/manual/142/families
PS then we can look into wall spamming, but I would suggest that you open new thread for that <img src="{SMILIES_PATH}/icon_e_smile.gif" alt=":)" title="Smile">