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I've been having this problem now with this rendering. It's basically that on the walls and some other things like desk are appearing those little light spots. I'm attaching a picture with the settings I'm using:

Hi i'm learning VRay and I found something strange and I don't know why is happening maybe someone can explain me. When I render this scene in my render view this blue spots appear, but when I save the image (.jpg) it desapears, why is this happening? thanks in advance:p .

Hi all! I've been having a rather annoying problem with V-Ray and I wondered whether you guys could lend a hand. I am trying to render a simple scene consisting of a plane, a cube and a teapot. All of these objects use a standard VRayMtl with just the diffuse colour set differently for each. The problem is, when using a HDR image for the GI Environment (skylight) override, the render always comes out with large splotches over the floor plane and objects. Also, if there is any animation in the scene, a large amount of flickering and 'glitching' happens around the objects in question. In the GI tab, all settings are left at default with the primary render engine on "Irradiance Map" and the secondary on "Brute Force". I have rendered out the exact same scene twice, using just a Vray Light for the first and removing the Vray Light and using a HDR image for the GI Environment (skylight) override for number two. All other settings are default. As you can see, the HDRi is causing really nasty splotches everywhere. I believe this problem is caused by the Irradiance Map, as using a lower preset causes larger spots, however, since I wish to light my animations with a HDRi, I'd rather keep the render times as short as possible, and using high Irradiance Map settings drastically increases render times. The method I am using with the HDRi is putting the "VRayHDRI" material in the GI Environment (skylight) override slot, instancing that to an empty slot in the material editor and in the VRayHDRI options, selecting the HDRi I am using (http://www.openfootage.net/?p=255). I also set the overall multiplier to 12 in the processing. So, my question is, how can I remove these horrible splotches but still keep my render times realistic? Also, could this be what is causing the horrible flickering and glitching with animations? I have attached the scene file for anyone who might want to take a deeper look. The HDR file I'm using is this: http://www.openfootage.net/?p=255 I'm using V-Ray Adv 2.30.01, 3DS Max 2012 on a Windows 7 machine. Specs (just in case): i7 2600K (3.4GHz) 16 GB RAM nVidia GeForce GTX 590 Thanks very much in advance! VrayHDR Problem.zip