Hi, It is rather to illustraate the problem than a real challenge. What I'm trying to get here is an even lighting from bounced rays of light in PBR. The only way I can achieve this at the moment is to multiply bsdf value of the shader which allows more light to be bounced around. The problem is that renderes are very noisy even with pretty high setting. Also attanuation looks still too quick even with the light set not to attenuate. I'm curious if you have any workaround to that. interior_1