# V-Ray 7 render extremely slow

**URL:** <https://forums.chaos.com/t/v-ray-7-render-extremely-slow/121086>\
**Category:** Issues\
**Created:** [December 20, 2024, 1:21pm UTC](https://forums.chaos.com/t/v-ray-7-render-extremely-slow/121086 "2024-12-20T13:21:02Z")\
**Posts on this page:** 6\
**Page:** 1

<div class="post-metadata">

**Author:** ![jackieteh](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/jackieteh/32/1844_2.png) [@jackieteh](https://forums.chaos.com/u/jackieteh)\
**Post date:** [December 20, 2024, 1:21pm UTC](https://forums.chaos.com/t/v-ray-7-render-extremely-slow/121086/1 "2024-12-20T13:21:02Z")

</div>

Hi,

I have a scene, no matter how I set it it still took 4-5hours to render a 2500px image. I have tried set it to:

Min:1  
Max:24  
Noise:0.01

(8h 24m render time)

Min: 1  
Max:32  
Noise: 0.05

(4h 40m to render time)

I change it to

Min:1  
Max:64  
Noise:0.05

(4h 32m to render time)

The scene have 80% glossy reflection material.

Attach image is Min:1, Max: 64, Noise: 0.05 setting samplerate element, it still rendering.

ps: forgot to mention, i am using batch render for this project

 ![Capture.jpg](https://europe1.discourse-cdn.com/chaosprd/original/3X/d/b/db6c65b0499ff1de59d46a77720fdd7377b5fb17.jpeg)

---

<div class="post-metadata">

**Author:** ![hermit.crab](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/hermit.crab/32/46825_2.png) [@hermit.crab](https://forums.chaos.com/u/hermit.crab)\
**Post date:** [December 23, 2024, 10:34am UTC](https://forums.chaos.com/t/v-ray-7-render-extremely-slow/121086/2 "2024-12-23T10:34:23Z")

</div>

What’s the render time difference between V-Ray 6 and V-Ray 7? Since you’re using a lot of glossy shaders, try avoiding making them fully reflective or glossy, since this increases render times (i.e. make glossiness 0.95 and use a slightly less white color for reflections).

---

<div class="post-metadata">

**Author:** ![Joelaff](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/joelaff/32/71647_2.png) [@Joelaff](https://forums.chaos.com/u/Joelaff)\
**Post date:** [December 24, 2024, 5:38pm UTC](https://forums.chaos.com/t/v-ray-7-render-extremely-slow/121086/3 "2024-12-24T17:38:15Z")

</div>

Also, reduce the reflection depth to as low as you can get away with ~3-6 perhaps.

---

<div class="post-metadata">

**Author:** ![jackieteh](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/jackieteh/32/1844_2.png) [@jackieteh](https://forums.chaos.com/u/jackieteh)\
**Post date:** [December 26, 2024, 1:55am UTC](https://forums.chaos.com/t/v-ray-7-render-extremely-slow/121086/4 "2024-12-26T01:55:57Z")

</div>

> [@hermit.crab](#):
>
> What’s the render time difference between V-Ray 6 and V-Ray 7? Since you’re using a lot of glossy shaders, try avoiding making them fully reflective or glossy, since this increases render times (i.e. make glossiness 0.95 and use a slightly less white color for reflections).

But using metalness reflection should be white color, right?

---

<div class="post-metadata">

**Author:** ![jackieteh](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/jackieteh/32/1844_2.png) [@jackieteh](https://forums.chaos.com/u/jackieteh)\
**Post date:** [December 26, 2024, 1:57am UTC](https://forums.chaos.com/t/v-ray-7-render-extremely-slow/121086/5 "2024-12-26T01:57:51Z")

</div>

> [@Joelaff](#):
>
> Also, reduce the reflection depth to as low as you can get away with ~3-6 perhaps.

Will give a try, if not every time client asking for changes, it need 4 hours to render single, 3 views, it take 12 hours.

---

<div class="post-metadata">

**Author:** ![jackieteh](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/jackieteh/32/1844_2.png) [@jackieteh](https://forums.chaos.com/u/jackieteh)\
**Post date:** [December 26, 2024, 2:32am UTC](https://forums.chaos.com/t/v-ray-7-render-extremely-slow/121086/6 "2024-12-26T02:32:25Z")

</div>

Just give it a try, both method mention above help, thank you very much for your help.