I’ve tried a PSE despeckle (Made the image really dark, and reduced about 25% of the fireflies), and a clamp adjustment. That’s about as far as my knowledge for this goes… Any tips or suggestions to fix the fireflies would be very much appreciated
This is just a “worst case scenario” scene for forward path tracers like Cycles. You really just have to render longer, or grab a renderer with bidirectional/metropolis sampling.