RTX fireflies and splotches
In certain scenarios playing Minecraft with RTX there are fireflies that become splotches in the final image seen below, I have stumbled on a paper about rejecting fireflies through statistical analysis before denoising. this leaves the fireflies out of the temporal buffer and out of the final image, give it a look over
https://gfx.cs.princeton.edu/pubs/DeCoro_2010_DOR/outliers.pdf