Endless render with devouring RAM Corona 7

[IamAlive]

Hello!
Was the worst decision to upgrade to Corona 7
The new physical stuff is destroying my scenes. And I can't go back to Corona 6 and get the old stuff back
My projects have been destroyed. please help me!
I worked with the same scenes in Corona 6, everything was fine!
And now, even in almost empty scenes, there is an endless render with an increase in RAM before the program crashes.

[GeorgeK]

Hello!
Was the worst decision to upgrade to Corona 7
The new physical stuff is destroying my scenes. And I can't go back to Corona 6 and get the old stuff back
My projects have been destroyed. please help me!
I worked with the same scenes in Corona 6, everything was fine!
And now, even in almost empty scenes, there is an endless render with an increase in RAM before the program crashes.

Hi, generally it is a good practice to always keep a backup of your scenes when changing versions, and especially after automatic conversions. CoronaPhysical Mtl shouldn't introduce any RAM usage by its own, can you please clarify if your converted materials have a lot of texmap nodes?

Are you using bitmaps or CoronaBitmaps?

[IamAlive]

This is an ordinary interior, the only room.
I made the scene as easy as possible and removed everything unnecessary.
Textmap is not used.
Converted Bitmap to Corona Bitmap didn't help.I don't understand at all why rendering can start normally. and then the workload of the processor switches to RAM gradually loading it from 12gb and a growing 88gb.
Before the conversion of materials, this scene worked easily.