Why doe's this saved LC pass work and all other not?

[Micha]

I run in a strange issue - I saved a LC pass of a fly trough (5000 subdivs) and later rendered frames shows a clean calculation around the lights.




I wonder why it is so clean and the finally denoised result so perfect. So, I did some more tests but I can't repeat the clean calculations with new created LC cache files anymore. Now I get this noise around the lights, which cause artefacts by denoising. Why it doesn't work anymore? It's a LC based on 5000 subdivs and camera path like before. What could be the reason for the difference?

[Micha]

I simplified the scene and it looks like there is something wrong with the scene. The ceiling light create a rectangular noisy area. I will send a bug report per email.

[nikoleta.garkova]

Hi Micha, thank you for sharing the files over. We'll have a look and get back to you asap.