Render freezing while computing Prepass Irradiance

[noel_d3]

The problem is in the title :
For some images of my sequence a render bucket stop at a place during render gi prepass.

My scene is not too big
I have 3D Motion-blur
glossy refraction, and reflection with max depth 2
default geometry is Dynamic and Dynamic memory limit is 6000 MB,
Irradiance map is in hight animation, Hsph subdivs. 50, Interp. samples 20
and antialiasing DMC 1-6

If you have a trick to resolve this problem, I'm interested

[noel_d3]

I solved the problem by reducing 2 to 1 a Turbosmooth for blocking images.
But I still can not understand where is the problem, the memory was not saturated.

[vlado]

Would it be possible to send me the problem scene to vlado@chaosgroup.com so that we can check the issue?

Best regards,
Vlado

[noel_d3]

Thank you Vlado, I ask my client if it's possible to send his model, but I am not sure because of his contract.
Otherwise I would try to reproduce the bug in another scene as soon as I finished my production.