Left: Input (5spp path tracing). Right: Denoised output.
Even with temporal reuse and under static lighting, the denoised renderings exhibit temporal artifacts. According to the timings in the original paper (measured on a RTX 2080 Ti), the denoiser takes 24ms to process a 512x512 image, which has to be added to the pathtracing cost. Our slowest network takes 16ms (measured on a RTX 3090 however).