Using 4.12.5 generate ios ipa, file size is half of the same project but generate by 4.11

it’s more like that option “cook everything” is not check. but i really check it.
same project can bulid right ipa file(size and content) in 4.11. but can’t work in 4.12.5

some asset don’t reference directly by level. we use c++ code to spawn. so during 4.11, we also use cook everything to cook those contents and ipa file is ok.

what can i do?

https://udn.unrealengine.com/questions/318219/using-4125-why-ipa-size-is-half-same-project-using.html#answer-318438

finally, i change a new iMac with osx10.11.3, package on ios is ok now.