I’ve had a bit of a problem with fireflies(single pixels that stand out in a render) in my render that is single pixels that are standing out like so:
I’ve made some changes in the render setting that still left some wayward pixels but after reading up on the issue in blender docs the thing that fixed the issue for me was applying a “Despeckle Filter” to the render composition nodes. Here’s the relevant blender doc in case some finds it helpful : https://en.wikibooks.org/wiki/Blender_3D:_Noob_to_Pro/Advanced_Tutorials/Cycles_Fireflies
The final effect looks like so: