heya, from what i can tell, your settings are okay.
Your volume size and depth is also okay, as i often use even higher values…
This is more like a graphics card issue, or something weird in godot internally.
Most of the time how i fix this is tweak some values so theyre a little bit more above 0 and restart godot and its fixed for me.
Haven’t confirmed but it seems like its caused by the directional lights “energy”
i.e the Energy and Volumetric Fog Energy.
Too bad this is limiting the god rays, so not a great workaround…
These settings work great for no graphical burn or etc.
Hope this can somewhat help your project to get rid of the artifacts
BUT that said, every project requires different values, i found that these values get me godrays that i like, they might not be suitable for your project but for me they are good as they are.