Tricks to reduce render times in Vray

Some years ago, when we  produced a rendering in 10/15 hours was cause for pride.  Reducing the time in the rendering production is a goal to keep in mind. We need improve our skill reducing our rendering time too.

Here are some tips that I hope can be a starting point for an analysis of your personal “rendering behavior“ when rendering with 3dsmax and vray:

1)  Use Low resolution for rendering tests. I know, everyone likes to render a big image, but we risk to waste too many time if we always use 800×600 minimum.

2)  Use Rendering Region: render only what interests you. Time to time check your shaders, verify the little differences.. and quickly find the result you’re looking for.

3)  Do not add Glossy effects in vray. Add it just when you think that the scene works fine. (I know that everyone loves Glossy effects, but we risk wasting much time.)

For Vray users:

4) when we start the scene use fast parameters for GI:Primary buonces: Irradiance map / -4 -4 Secondary bounces: Light Cache / 100

5) In the Vray Global Switches rollout use Override Mtl. We can use a very simple material like gray to test the light in the scene. When we are convinced of the light scene add the various shaders.

6) In DMC Sampler rollout, increse Adaptive amount from 0,85 to 1,0 The image quality will be lower, but also the time to render it!

7) About Vray Light, check the option “Store with irradiance map“. Even here, lose a little of shadows but the time is decidedly lower.

All this tips will allow us to lower a lot the time setting in vray renderings. The final time rendering will be only a small part of a comparison!!

Tags: accelerate vray, minimizing render times in 3ds max vray 2009, reduce render time, render time, VRAY, vray light, vray renderings