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Hi,
I've got a static scene which renders quite nicely at 4 or so hours on a i7-5960x. The resolution is around 5000 in height pixels.
However there is one part of the scene where the rendering slows to a complete crawl (like over 24 hours and counting), I've never seen anything like it before.
The cause of the issue are three of four VRayAreaLights and a VrayBlendMtl which is reflecting these lights. The VRayBlendMtl is a road material which has two VRayMtl's fed into it - they both have a traced reflection depth of 2.
The odd thing is that I have other views of the same scene and the rendering time is all very consistent.
I started rendering on the 20th march at 10:50am, it got to 80% at around 2pm (great I thought), however over 30 odd hours later it is still trying to render this one section and it can take V-Ray about 3 hours for 1% on average from here on.
I am using the new sampler (vray controls subdivs) and 1-24 samples with .015 as the threshold. I also have max ray intensity at 20.
For the moment I've just disabled the area lights from reflecting which works but I want to be armed for this situation a little better in future - because it's just standard stuff in this scene. It is something that didn't show up until the final batch render.
Are there any other tricks I can do?
I've got a static scene which renders quite nicely at 4 or so hours on a i7-5960x. The resolution is around 5000 in height pixels.
However there is one part of the scene where the rendering slows to a complete crawl (like over 24 hours and counting), I've never seen anything like it before.
The cause of the issue are three of four VRayAreaLights and a VrayBlendMtl which is reflecting these lights. The VRayBlendMtl is a road material which has two VRayMtl's fed into it - they both have a traced reflection depth of 2.
The odd thing is that I have other views of the same scene and the rendering time is all very consistent.
I started rendering on the 20th march at 10:50am, it got to 80% at around 2pm (great I thought), however over 30 odd hours later it is still trying to render this one section and it can take V-Ray about 3 hours for 1% on average from here on.
I am using the new sampler (vray controls subdivs) and 1-24 samples with .015 as the threshold. I also have max ray intensity at 20.
For the moment I've just disabled the area lights from reflecting which works but I want to be armed for this situation a little better in future - because it's just standard stuff in this scene. It is something that didn't show up until the final batch render.
Are there any other tricks I can do?
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