White specks suddenly appearing in renders

fearthefailure

Okay, this is very strange, and I'm stumped.  I've spent more than 14 hours digging for information on this and I can't find a word about it anywhere.

I have an AMD build, and all was good at first.  I've rendered video and images with no problem.  These white artifacts / specks weren't in the video at all, and you'd be hard pressed to find them in any images.  Most of the images had none, and only, like, two had less than a handful.  I can't show any others because the character wasn't dressed yet.

Angie Serious (2) has only two of these.  One on the left bicep, and the other one in the center of the forehead.  Good luck spotting them without reading that.  I only needed to render it again because I spotted a pit of poke through on the left breast that wasn't in the viewport before.  I fixed it and all was good for the next few renders.  Then I decided I wanted higher render quality.  I upped that and nothing went wrong.  Then I noticed the hair was a little dull for the quality of this character.  I increased the gloss and the metalacity.  It got that realistic shine and my render times didn't change, but then I started to get this spotting in my renders.  You can see the dozens of specks in Angie Serious.  I don't even have to point you to it.  It's like someone spilled body glitter on it.

I reset all of the changes to the hair but the specks didn't go away.  I reset the render settings but the specks didn't go away.  Aside from fixing the poke through, everything is exactly back to how it was before I had the problem, which is when I rendered Angie Serious (2).  When I reset the render settings, I hit the default button.  I didn't just manually reset by memory.  Everything is 100% back to stock in that tab.  I tried the different rendering options and had no issues.  The character is located at 0,0,0 with no rotation as well.  I could try removing a light or two, but I'm not sure that's the problem.  I also worry that the render will be too dark or come out grainy.  I've got seven distant lights in the scene with no floor or background.  They're not turned off, they don't exist; it's just the character.  I've also rebooted and slept the system for 10 hours.  It still happens even when it's running cold.

Because I'm running an AMD build, GPU rendering isn't available to me.  I have an AMD Ryzen 5 5600 G APU overclocked to 4 GHz stable.  No hardware or system settings changed between a single render.  My temps only go up after I make repeated attempts, otherwise my system stays quiet.  This has become a permanent issue, and the specks appear in the exact same places unless I shift the view or change a setting.  What could make it suddenly start doing this?  Has this happened to anyone else?  I'm baffled.  I didn't even touch the chasis, let alone open it up to reseat anything or jostle a cable.  This is just strange.

Catherine3678ab

Fireflies ;-) There are several places where one can make adjustments be they on the render settings tab or the surface tab. I can make a whole lot appear using the create a light options on the top of the program. Those are better for use if rendering with 3Delight. Using light presets made for Iray tends to work better although I'll often add in some mesh lights as well.

Here's a thread from years ago: click here

fearthefailure

Yeah, I figured this out after I posted the thread.  This one can be deleted.  I'm so embarassed.  These turned out to be hot spots, and I managed to fix my problem.  If my comment is approved in another thread and this one doesn't get removed, I'll link to the thread with the solution.  I'm not used to seeing hot spots as raw data, so I guess that's why I didn't catch on sooner.