# V-Ray Render Optimization - an in-depth Guide (call for Before/Afters)

**URL:** <https://forums.chaos.com/t/v-ray-render-optimization-an-in-depth-guide-call-for-before-afters/48132>\
**Category:** General\
**Tags:** dmc, sampler, image, optimization, noise\
**Created:** [December 16, 2013, 5:05pm UTC](https://forums.chaos.com/t/v-ray-render-optimization-an-in-depth-guide-call-for-before-afters/48132 "2013-12-16T17:05:50Z")\
**Posts on this page:** 1\
**Showing post:** 7

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**Author:** ![Brendan\_Coyle](https://avatars.discourse-cdn.com/v4/letter/b/e99b99/32.png) [@Brendan\_Coyle](https://forums.chaos.com/u/Brendan_Coyle)\
**Post date:** [December 16, 2013, 5:54pm UTC](https://forums.chaos.com/t/v-ray-render-optimization-an-in-depth-guide-call-for-before-afters/48132/7 "2013-12-16T17:54:45Z")

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> [@Training needed](https://forums.chaos.com/t/training-needed/43824/2):
>
> Sure - I’ve updated the tutorial to make it a little more clear… but it’s done by unchecking the ‘Use DMC Sampler Threshold’ checkbox, which allows you to adjust the Image Sampler’s Color Threshold value independently from the DMC Sampler’s Noise Threshold value. Hope that makes sense.

So I take it that after you’ve successfully balanced a scene, if you’re working with a single or separate noise thresholds, you would shift them both higher if you needed faster renders? So that becomes the sole throttle for speed vs quality.

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