Redshift Out of VRAM in Cinema 4D

How to fix it

Try these in order — the most common fix is first.

1. 1. Free VRAM

   Copy steps
   1. Run only one instance of Cinema 4D
   2. Close Chrome and other GPU apps
   3. Simplify what the viewport shows
   Did this fix it? Yes No

2. 2. Restart

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   1. Save work and restart Cinema 4D
   2. Reboot if the message persists
   Did this fix it? Yes No

3. 3. Read the Redshift log

   1. Check the GPU memory statistics to see if the render went out of core
   Did this fix it? Yes No

4. 4. Reduce scene memory or get more VRAM

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   1. Lower texture sizes and heavy geometry
   2. Maxon recommends as much VRAM as you can afford, for example 11 GB or more
   Did this fix it? Yes No

Symptoms

Render fails or slows sharply with out-of-VRAM messages, or Cinema 4D reports Redshift disabled after an unrecoverable error.

Why it happens

• Scene needs more VRAM than the GPU has
• Other apps (Chrome, extra Cinema 4D instances) using VRAM
• The OpenGL viewport consuming VRAM
• Irradiance point cloud or volume data that cannot go out of core
• Driver bug or stuck app

This guide also covers

• redshift out of vram
• redshift out of gpu memory
• redshift out of core

Other Cinema 4D errors

• Cinema 4D Sign In OK, Waiting for Maxon App
• Cinema 4D License Not Found or No Offline License Found
• Cinema 4D Crashes on Startup
• Redshift Missing or Not Loading in Cinema 4D
• Redshift Error: Missing or Corrupted Shader Kernel
• Redshift Stuck on Initializing OptiX RT
• Cinema 4D Viewport Slow or Laggy
• Cinema 4D Crashes While Rendering