Updating shaders - increasingly long

[dono]

Hello

I have a problem with a scene. The rendertime by frame is 10 seconds at the beginning, but increase as the time (40 seconds with 50 frames rendering). It is the "Updating shaders" that is inscreasingly long, while there is no new texture or shaders, no camera movement, ...

If i stop the frame (40 seconds rendering and it continue to increase...), and i restart this frame, it falls again at 10 seconds.

What happenned ????????? I have 5000 frames to render, and it is a real concern

Thanks for advice !

OctaneRender™ for Blender 1.55 - 4.10 beta Win
Blender Octane Edition - 1.55 - 4.10 beta (2.70)
Windows 7

[JimStar]

Are you able to give me this scene?

[dono]

Hello,

The blend is too heavy, and multiple asset links to post it...

A friend wrote a python script to relaunch the render, by image block, so the rendertime relaunch also...

I will give the scene if i will have the same issue with a little blend.

Thanks.