October 8 - 10, 2026

warning num samples per thread reduced to 32768 rendering might be slower

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Warning Num Samples Per Thread Reduced To 32768 Rendering Might Be Slower Link Here

You can track exactly how much memory is being used with tools like GPU-Z to verify if you are hitting the hardware's ceiling.

Export your scene to a .vrscene file and render it with V-Ray Standalone to bypass the memory overhead of the host application (like 3ds Max or Maya). Adjust Render Settings You can track exactly how much memory is

To minimize the impact of the warning and optimize rendering performance: This warning specifically occurs in the rendering engine

In this post, we’ll break down exactly what this warning means, why it happens, and—most importantly—how to fix it. why it happens

This warning specifically occurs in the rendering engine (developed by Chaos ) and indicates that your GPU is running out of video memory (VRAM) . What it means

❌ Modern GPUs with limited VRAM (e.g., RTX 3050 4GB) can still show it on high sample counts.