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

: When in doubt, run a benchmark with and without the warning. Measure actual render time for your specific scene. Often, the difference is smaller than you’d expect.

This gives the GPU more "breathing room" to finish heavy tasks without the OS killing the process. Rendering Speed: The Real Impact : When in doubt, run a benchmark with

The loss is worse when:

Try disabling displacement in the Global Swatches settings to see if performance improves. : When in doubt