@Polinalkrimizei: I have the same feeling

, I think its because the Camera angle wich I set wider to catch more from the small room.
@Originalplan®:Thanks alot, I will do !
@zeitmeister: Thx !
Some of u remember this scene before, I made a short Animation with it
Indigo for C4D | Interior Animation
https://www.youtube.com/watch?v=Up-xYq6_JS0
I let it render for 5min. on GTX 1080 in 1920x1080 Resolution. There was little noise in darker areas so I used a Denoiser in After Effects.