# Raytrace extremely temperamental

**URL:** <https://discourse.mcneel.com/t/raytrace-extremely-temperamental/57160>\
**Category:** Rendering\
**Created:** [March 10, 2018, 6:18pm UTC](https://discourse.mcneel.com/t/raytrace-extremely-temperamental/57160 "2018-03-10T18:18:55Z")\
**Posts on this page:** 6\
**Page:** 1

<div class="post-metadata">

**Author:** ![akilli](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/akilli/32/514967_2.png) [@akilli](https://discourse.mcneel.com/u/akilli)\
**Post date:** [March 10, 2018, 6:18pm UTC](https://discourse.mcneel.com/t/raytrace-extremely-temperamental/57160/1 "2018-03-10T18:18:55Z")

</div>

Hello. I was having this problem with Rhino 6 Beta and am still having it with the new release. Raytrace works for a while and then begins behaving like regular Render, not even ticking off iterations. Sometimes restarting Rhino helps, sometimes it doesn’t. I thought it might be the complexity of my model but tried it on a very vanilla cone, in the attached file, and get the same result. Are there some settings I’ve neglected or something else I’ve overlooked? Thanks.

[JustRender.3dm](https://global.discourse-cdn.com/mcneel/uploads/default/original/3X/4/c/4c77d378131d30edb46d9c8ec98a15c8ca7e200e.3dm) (92.0 KB)

---

<div class="post-metadata">

**Author:** ![nathanletwory](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/nathanletwory/32/482880_2.png) [@nathanletwory](https://discourse.mcneel.com/u/nathanletwory)\
**Post date:** [March 10, 2018, 6:30pm UTC](https://discourse.mcneel.com/t/raytrace-extremely-temperamental/57160/2 "2018-03-10T18:30:49Z")

</div>

Can you please attach the result from the Rhino command `_SystemInfo` while I download and check your file?

Edit: there is nothing special in your file that would make me suspicious. The requested information will shed more light on your issue.

Thank you.

/Nathan

---

<div class="post-metadata">

**Author:** ![akilli](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/akilli/32/514967_2.png) [@akilli](https://discourse.mcneel.com/u/akilli)\
**Post date:** [March 10, 2018, 6:35pm UTC](https://discourse.mcneel.com/t/raytrace-extremely-temperamental/57160/3 "2018-03-10T18:35:06Z")

</div>

Here we go Nathan:  
[system info.txt](https://global.discourse-cdn.com/mcneel/uploads/default/original/3X/b/2/b227f3bc3e402b3798687fa3dd2c6b54f5e18b2a.txt) (1.6 KB)

---

<div class="post-metadata">

**Author:** ![nathanletwory](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/nathanletwory/32/482880_2.png) [@nathanletwory](https://discourse.mcneel.com/u/nathanletwory)\
**Post date:** [March 10, 2018, 8:19pm UTC](https://discourse.mcneel.com/t/raytrace-extremely-temperamental/57160/4 "2018-03-10T20:19:55Z")

</div>

Hi @akilli,

For the `Raytraced` mode your Quadro 600 isn’t very powerful with only 96 compute cores (see [this page](https://en.wikipedia.org/wiki/List_of_Nvidia_graphics_processing_units#Quadro_x000_series). You might want to try switching to the CPU for `Raytraced` (via `Tools >> Options > Cycles`).

I used to have a GT 420 in my machine (but there is no longer room for that now that there are two other GPUs in it) - it worked (and its bigger sibling GT 430 is probably even slightly faster than your Quadro 600, because it is clocked higher), but the CPU was clearly faster.

---

<div class="post-metadata">

**Author:** ![akilli](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/akilli/32/514967_2.png) [@akilli](https://discourse.mcneel.com/u/akilli)\
**Post date:** [March 10, 2018, 8:28pm UTC](https://discourse.mcneel.com/t/raytrace-extremely-temperamental/57160/5 "2018-03-10T20:28:51Z")

</div>

Just switched to CPU. So far, so good. Thanks Nathan!

---

<div class="post-metadata">

**Author:** ![nathanletwory](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/nathanletwory/32/482880_2.png) [@nathanletwory](https://discourse.mcneel.com/u/nathanletwory)\
**Post date:** [March 10, 2018, 8:34pm UTC](https://discourse.mcneel.com/t/raytrace-extremely-temperamental/57160/6 "2018-03-10T20:34:22Z")

</div>

Cool, I hope you have good use for `Raytraced` 🙂