---
title: "Known Issues and Limitations"
canonical: "https://documentation.chaos.com/space/VCLOUD/126075945/Known%20Issues%20and%20Limitations"
format: markdown
---
<span style="color: #272727">This page provides information about the known limitations of Chaos Cloud Rendering.</span>


## **Known Issues**

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- Rendering of large resolution images (13k x 13k) may result in an out of memory error;
- .exr files might not get denoised upon completion of the render. The denoiser channel is available in the .exr.
- Forest pack limit to visibility option is not working correctly with VRayPhysical camera;
- When a render is interrupted on the Cloud at the end of the rendering process, a PNG file is not complete.
- <span style="color: #172b4d">Anima 4D people export to Chaos Cloud Rendering produces large size files and their upload to the Cloud might be sluggish.</span>
- <span style="color: #172b4d">Some artifacts may appear when Subsurface Scattering and Adaptive Lights are used in the scene.</span>
- <span style="color: #172b4d">Buckets (Bucket Image Sampler) could hang when there are multiple overlapping VRayVolumeGrid in the scene, or if their Volumetric Motion Blur is set to </span><span style="color: #172b4d">**Grid-based**</span><span style="color: #172b4d"> instead of </span><span style="color: #172b4d">**Ray-traced**</span><span style="color: #172b4d">.</span>
- <span style="color: #172b4d">Clouds created with V-Ray Sun and Sky are not visible in the alpha channel.</span>
- <span style="color: #172b4d">Scenes can take a lot of time at 100% when uploading, if there are thousands of pieces, or packages that have to be uploaded.</span>
- <span style="color: #172b4d">When rendering an animation containing Cloner with MoGraph Cache (Cinema 4D), small objects appear in some of the frames.</span>
- <span style="color: #172b4d">There is a difference in bump mapping when using VRayColor2Bump only and VRayColor2Bump with VRayNormalMap.</span>
- <span style="color: #172b4d">When rendering subdivided geometry with a V-Ray Stochastic Flakes Material containing a significantly increased </span><span style="color: #172b4d">**Number of Flakes,**</span><span style="color: #172b4d"> the rendering process crashes on the Cloud.</span>