One more thing guys, the Caustics branch went live today. You can get access to it on our site: Unreal Engine | NVIDIA Developer
You’ll need github developer access, but that’s all. Then you can build the branch yourself. You’ll notice in the documentation on the github page for this one are little demos and example projects for download.
It’s also worth noting that the Caustics branch includes a new improved version of RTGI. If you’re having a difficult time getting access to RTXGI right now, you could go for the new version of RTGI in this branch instead. It does have the advantage of including caustics, improved translucency effects as well, plus all of our other NvRTX branch enhancements for ray tracing. So for many people this might be the branch to get. Good luck! Let me know if you have any questions.