[FootballMuse]

TBF, the blender version you reference was from an animation, not the first single still render.

blender (frame 0): https://i.imgur.com/XIV8Hma.png

original: https://i.imgur.com/GGwVibG.jpeg

Also, it includes a caveat:

> Unfortunately, due to the nature of volumetric rendering, I was unable to economically render the final animation at a high resolution with enough samples. So I had to resort to denoising, which sadly degraded the image quality and made it a bit flickery.

> Perhaps, with enough computing power, I'll be able to return to this project in the future and provide a cleaner final render.

[hu3]

And so the remaining 20% of the work will take another 80% of effort.

Classic

[NayamAmarshe]

No, not really. Increasing the volumetric samples + bounces size is fairly simple. It's just a value in the rendering tab.