Noisy interior render

[Michał Morzy]

Hello folks!

I have a problem with my recent scene. I rendered some images already and they were fine. With this one there is a lot of noise. I know there are small windows. I put the light portals. The problem still occurred. Do you have any ideas?

[lacilaci]

try singlesided glass, make sure the glass material has caustics turned off(should be by default) try default render settings(if it isn't now) and also check what are your noise levels when you switch from hdri to corona sun and sky environment...