Hey, I ran into an issue with VDB/Niagara in Path Tracing. When I render FXs with Path Tracing they suddenly become extremely low-res / blocky and much more transparent / less saturated compared to Lumen. Everything else looks fine, only the FXs are rendered badly in Path Tracing.
Has anyone encountered this before? Is there a fix for it, or some command/settings I should adjust? (UE 5.6)
Go through the Niagara fluid documentation and see if you can find info on cinematic settings. You can probably manually override the simulation resolution to fix the blocky issue. If you’re rendering production footage, then I’d honestly just render the niagara fluids in a raster pass and then composite with the rest of the lighting. It’ll cut down on render time and give you control over color balancing.
Also, bear in mind that the path-traced volumetric lighting is still not really comparable to the raster view. You’re best off just rendering in a seperate pass and compositing.
