How much should Spectral AI denoiser be increasing renders?

[stevenmenegozzi]

I have a scene set set to Pathtracing, 1024 max samples. With Spectral AI denoiser turned off, it takes about 2 minutes to render per frame. With it turned on, min denoiser samples 10 and max 20, it's past 6 minutes. I don't know how long it'd actually take because I stopped the render. Does Denoiser typically increase render times by 200% or more? I have "on completion" turned on and my system has 128GB RAM and an RTX 3090.

[aoktar]

Denoiser will add extra time if you don't use lower maxsamples. Its purpose is to get same look with less samples. But your info sounds like it failed with some error. Did you check for error output?

[bepeg4d]

Have you tried with c4doctane 2020.2-RC6?
viewtopic.php?f=85&t=76633

ciao Beppe