Warning Num Samples Per Thread Reduced To 32768 Rendering Might Be Slower Exclusive ❲Complete❳

Complex procedural modifiers can rapidly bloat your geometry footprint at render time. Issue with slow animation render times - SketchUp Forum

In simple terms, when rendering an image or animation, the software divides the image into tiny samples, which are then processed and combined to produce the final output. The number of samples per thread (a thread being a separate processing unit within the software) determines how much data is processed simultaneously. Complex procedural modifiers can rapidly bloat your geometry