Neural radiance cache issue

[J.C]

Hi, I've tested few projects with latest Octane 2027 and when Neural Radiance Cache is enabled the render gets much brighter. Is it a known issue or something else?

example render:

[J.C]

Anyone?

[wallace]

Any chance you can share a scene with me? We have made a couple of NRC fixes that may not have make into the 2027.1 alpha 2 build.

[J.C]

Hi wallace, I sent the message with the link to the scene.

[wallace]

Hi wallace, I sent the message with the link to the scene.

Thanks, I have verified that the next 2027.1 alpha 3 (and also upcoming 2026.5 stable) will have a solution for this.

The original large bias is a result from the neural network not being trained sufficiently, we have introduced a kernel setting allowing users to increase the training count in situations where you are rendering an indoor scenes with not much direct light and mostly rendered with GI.

[J.C]

Thanks, I have verified that the next 2027.1 alpha 3 (and also 2026.4 stable) will have a solution for this.

Thanks for the info! Where in 2026.4 I can find this option?

[wallace]

Thanks for the info! Where in 2026.4 I can find this option?

My bad, I meant the upcoming 2026.5, sorry about that.