So Slow

[vlado]

Huh interesting. Then it means there is a bug with colored translucency.

In any case, the displacement on the carpet also causes a big slowdown. You can try the following to speed it up:

*) Turn on the "static geometry" in the VRayDisplacementMod modifier;
*) Set the edge length to 8 to reduce the tessellation and memory requirements a bit;
*) If you can use a bitmap rather than a procedural texture for displacement, it would be even faster.

It should give it a few more percent speed up even, but it will take extra RAM.

Best regards,
Vlado

[joconnell]

Yep, definitely your best bet. I presume it's the blue / orange thing that you're getting on the light fittings white you're seeing as the error? If that's the only problem then I'm looking at about 45 minutes for a decent render at hd res in about 45 minutes. Pretty much the entire scene is being lit by your indirect light so brute force is going to have to work hard. First thing I did was raise MSR to 128. Next I'd probably look at adding some light selects to see white of the sets of light fittings are the dirtiest. There's a bit of grain in the wall reflections but it might be okay?

[vlado]

Next I'd probably look at adding some light selects to see white of the sets of light fittings are the dirtiest.

The sun and the mesh lights are noisiest. The sun falls at a very oblique angle touching just a very small portion of the room, but it bounces almost everywhere.

Best regards,
Vlado

[glorybound]

What is "MSR"? Material, Sun, and Reflection?

[glorybound]

I ended up replacing the meshes. I put the sun there so things didn't get over exposed from the windows. I'll try moving it around.

The sun and the mesh lights are noisiest. The sun falls at a very oblique angle touching just a very small portion of the room, but it bounces almost everywhere.

Best regards,
Vlado

[joconnell]

What is "MSR"? Material, Sun, and Reflection?

Minimum shading rate!

[joconnell]

The sun and the mesh lights are noisiest. The sun falls at a very oblique angle touching just a very small portion of the room, but it bounces almost everywhere.

Best regards,
Vlado

Yep - renders where the main light source are out of shot are a little bit tough at times

[glorybound]

I have only went as high as 40. I once read that anything over 8 isn't useful. I read it on the internet, so it must have been true.

Minimum shading rate!

[joconnell]

It's kind of the same thing as using high subdivs, just in one place. It can be a bit more convenient than jumping through each of the settings in your scene and tweaking individually.

[glorybound]

Got it. I was using it like that, but I wasn't going up very high. For interior I was going as high as 40 and exteriors as high as 16. I am keeping everything at 8 and using the 'MSR' to control noise/quality.

It's kind of the same thing as using high subdivs, just in one place. It can be a bit more convenient than jumping through each of the settings in your scene and tweaking individually.

[Deflaminis]

I like optimizing, so I played around a bit.

Biggest speed increase by far for me was to simply covert the scene to editable mesh. Rendered a lot faster making only that 1 change. Combined with the other posts I can only imagine it would be even faster still. I didn't plug anything into the missing textures, so probably would be slower with those.

EDIT: I've seen this before when we did a flythrough for an office. Found the tip in a post here somewhere but not sure why it's faster as edit mesh.

[glorybound]

I like optimizing, so I played around a bit. Biggest speed increase by far for me was to simply covert the scene to editable mesh. Rendered a lot faster making only that 1 change. Combined with the other posts I can only imagine it would be even faster still. I didn't plug anything into the missing textures, so probably would be slower with those. EDIT: I've seen this before when we did a flythrough for an office. Found the tip in a post here somewhere but not sure why it's faster as edit mesh.

interesting. So, you basically collapse everything.

[cheerioboy]

Collapsing would have removed the displacement, which seems to double the rendering time for me.

[glorybound]

collapsing doubles your times or the displacement does?

Collapsing would have removed the displacement, which seems to double the rendering time for me.

[cheerioboy]

collapsing doubles your times or the displacement does?

sorry. The displacement gives me a longer render time. So it makes sense if you collapse all the geometry, which would remove the displacement modifier, that you would have a faster render time.