VDB/Heterogeneous Performance strangeness.

I’m testing out ways of optimizing VDB rendering. One thing I’ve noticed (while profiling in ProfileGPU) is that most CVAR settings seem to have no effects on performance.

eg.

r.HeterogeneousVolumes.MaxTraceDistance 3000

and

r.HeterogeneousVolumes.MaxTraceDistance 3000000

the 3000 setting will make them disappear, but they are still rendered. Offering no increase in performance.

Another example

r.HeterogeneousVolumes.VolumeResolution.X 10

r.HeterogeneousVolumes.VolumeResolution.X 100

I have to actually turn off the visibility flag of the Heterogeneous volumes for them not to be rendered.

I must be missing a flag, otherwise what’s the point? I’m in early access of 5.4

thanks!