james, how it was? i post here because i have a similar problem and i cant figure it out. Not only with the light cache but with the whole rendering process. At first the light cache in my model took ages, then i gave up and i directly lowered the light cache subs to 300 or something like that.. (ridiculous i know) then the light cache this time loaded fast.. But then the irradiance maps takes forever. Im talking about an entire day and the render process not even in half way.

The problem in my case seem to be translucent materials. My whole model is translucent and it doesnt matter what i do, vray dont have the "strenght" to render em. Simply red, orange and yellow materials with the translucent value to 50. No bumps, not reflection, no anything at all. Yes i have 2 vray sphere lights inside the model, but thats not the problem. I even removed the lights from the model and still it didnt make a difference. Yes a lot of translucent material but with minumum quality settings and my computer is not really that bad (i5 3570 3.4). I dont understand.

Im starting to think there is something really wrong with vray and/or sketchup.

Hi guys, im new to this community and not so new to sketchup/vray. But i was out for a couple of years and i returned a couple of weeks ago. Well, im using Windows 7 64bits on a i5 3570 with 8bf RAM (4 cores). My sketchup version is 2.0 and my vray version is 2.x

The problem im having is, i cant render a simple model, due to the excessive time it takes (more than 1 day) because its composed only with translucent materials. Everybody knows how bad is vray working with these materials, i already knew that, but.. i thought that was an exagerated statement

I attached the original image of the model im trying to make and the sketchup model itself.

The way i did it was, just to add 2 vray sphere lights inside, one in the bottom and the other up. The materials are just plain orange/yellow/dark orange materials with transparency at 50 (i dont have a clue how to make transparency in 25% for example vray will not let me). Every material has a bump texture (not that it matters anyways) and thats all.

When i was doing render tests, i deactivate all the shadows, reflections, refractions, and i use really poor quality settings and still the render will take more than 1 day to go through just 1 single pass... really ridiculous. And the resolution is only 1280x720. Obviously something is going on but i dont have a clue.

I know the whole model is translucent, and thats a problem, but really??? because if for just 1 pass it takes 1 day.. i cant imagine the entire render...

Ideas? tricks? how to make renders of this sort in vray??

Hi, almost new to vfs, but what about regular materials?? i am in the same situation. I need to make just a plain red surface to be only 25% translucent. But unless i make the material 50% or more, vray will never get the translucency. I assume this must be done in the vray material editor, but i dont have a clue...