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

Let's break it down phrase by phrase.

To minimize the impact of the warning and optimize rendering performance: Let's break it down phrase by phrase

To clear this warning and restore performance, you must reduce the memory footprint of your scene using these strategies from Chaos Support and user forums: Optimize Textures : This is often the largest memory consumer. Use Compressed Textures or downscale 4K/8K textures that are far from the camera. Lower Light Cache Subdivs : For 4K images, keep Light Cache Subdivs between 1,000 and 3,000. Going higher uses excessive VRAM. Limit Render Elements keep Light Cache Subdivs between 1