lightingEnvironment texture breaks async scene loading

Hi.


Assigning lightingEnvironment to scene causes stall when loading scene, even if prepareObjects is called.

Seems to me that some lighting preprocess for enviroment lighting is done synchroniously no matter what.

I've posted a bug for this: https://bugreport.apple.com/web/?problemID=39683078


Can somebody from dev team clarify whether this bug is lost in minor bug universe or it may be fixed in next release or two?

Cause a hard choise between async loading and a beautiful picture makes SceneKit a whole kinda unuseful for real projects...


Thanks in advance.