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

This redistributes GPU threads dynamically, keeping them well below the 32,768 per-thread limit. Switch from Progressive to Tiled Rendering If your engine supports it, switch your render mode.

If you set your global render sample count excessively high (e.g., 50,000+ samples) without using adaptive sampling, the engine divides these samples across available GPU threads. If the scene geometry is simple but the sample count is massive, individual threads get overloaded past the 32,768 threshold. 3. Progressive Rendering Overheads This redistributes GPU threads dynamically

You can’t always eliminate the warning (some limits are hardcoded), but you can often reduce its impact or even make it disappear by optimizing your settings. keeping them well below the 32