New version of VXGI has been released on NVIDIA Developer. v0.91 (Actually was released on 22nd). I guess is a question more to . The UE4 integration is using CL 19972074. How long for you to upgrade to 20094040? I only ask , as I was planning to merge some of your changes across to my branch soon, but depending on how far you are from getting the latest merged in, I might just wait until then.