@Daddrendo I hear you on the marketing thing… I don’t remember them having conference-level presentations on Light Propagation Volumes, because it is considered experimental so that’s a fair critique.
I personally jumped on the UE4 bandwagon a year ago because of raytracing but It is basically unusable unless you do simple interior/archviz type work. Forget it for out-of-doors because it can’t be combined with ANY reasonable GI technology and the volumetric fog values when seen in raytraced reflections are too inaccurate (more fog in reflection than what nature would dictate for given distance.) not to mention the screwy translucency.I would be thrilled if we could even just have raytraced shadows with some other form of realtime GI. I have my doubts that RTGI will ever mature within the 2000 series timeline and will most likely be replaced by more efficient Nvidia tech like DDGI by that time. I personally think they should ditch RTGI for DDGI, especially if optimizations are the problem because DDGI only costs 1 ms at 4k and has NO NOISE. 1 ms!!! See link and video below.