Reduced To 32768 Rendering Might Be Slower [repack] — Warning Num Samples Per Thread

While slower than a fully operational GPU render, switching V-Ray entirely to CPU production mode eliminates VRAM hardware limitations. It will leverage your system's RAM, which is far easier and cheaper to expand.

Check Your Light SamplesIf you have dozens of lights in your scene and each has a high "Samples" value (e.g., 4 or 8), the total sample count per thread will skyrocket. Set your lights back to 1 or 2. While slower than a fully operational GPU render,

Here are practical solutions, from simplest to most advanced. 4 or 8)

Before the introduction of "tiled vs. full-frame" rendering, Cycles used tiles. A tile size of 512×512 pixels with high sample counts could demand excessive per-thread memory. The warning would appear, especially on 4GB GPUs. especially on 4GB GPUs.