Using sophisticated algorithms for downsampling can help preserve the image quality and reduce pixelation.
The holy grail for this workflow is real-time performance. Currently, reducing a 4K mosaic requires 0.5–2 seconds per frame on a high-end GPU. However, new hardware decoders (Intel Arc series and RTX 5000 Ada) now include that operate at <5ms latency. ssis698 4k reducing mosaic
: Some community-developed tools (often found on specialized forums or Google Drive links ssis698 4k reducing mosaic