I have a 4.15.1 outdated (flex and flow aren’t up to date in it) which include VXGI, so it’s possible. The small project with Star Citizen ships i talked about a couple post above was made using branch.
User Bluearc actually reached out to me yesterday about the new HairWorks branch that included a couple fixes and the MorphTarget support. Therefore i made 4.15.3 branch yesterday using the most up to date 4.15 branch from Epic Game, and Nvidia branches.
I also wanted some backup on Github in case i want to play around with GameWorks.
I might actually push a seperate branch which include VXGI (and a tesselation fix i submitted to Nvidia github by pull request, but hasn’t been merged).
Also i would assume VXAO is also impacted by the current issues.