Hi. Making interior scene with default settings produces more noise (no artificial light, only sun through window) 
. Maybe I should add some integrator or filter for better results (less noise)? Thanks! ;o)
Hi, for interior scenes the best would be the bidirectional integrator but it’s still experimental, so it isn’t much of an improvement yet. We are working on it right now it will be a lot better in the upcoming releases. Also, using the thin glass or no material at all for the window could reduce noise.
For the lighting, are you using the realistic sun/sky or an environment map?
ok, I see ;o) thanks!!!
For sun/sky i used realistic sky/sun.
You are welcome 
btw, the Sun/Sky will be improved in the upcoming releases as well…