Fog significantly slows down render time?

[adamrg7]

Is there something im doing wrong here, but have a light or two in the fog and the render time is very slow.. tested this in octane blender v3 v4 and standalone v4.

3x gtx 780

[J.C]

Fog and volumes are slow to render especially when they fill whole render area. This may be improved in v4 with volume denoiser that is in development now.

[glimpse]

OTOY is working on denoiser to improve speed, check this post by Jules:

https://www.facebook.com/groups/OctaneR ... y=denoiser