Right now if we have a problematic scene we need to manually search for the problematic object or shader, the memory breakdown that corona has at the moment is too simple, and it doesnt show that much usefull data, instead Vray has a very robust tool to asses the entire scene memory and time, check it out https://www.youtube.com/watch?v=UrKFES4PFWU
Honestly I really really hope this comes very soon. Im tired of spending significant portions of time turning hundreds of scene elements on and off to figure out what has all of a sudden caused parsing times to skyrocket. It doesnt even need to be a tool. If corona just printed it to a log file each time even that would be more useful.