Sorry was planning on doing that for 4.8, but things got a bit hectic . I will do it next week when 4.9 comes out. But in the mean time you could try, searching for Definitions.Add(“WITH_GFSDK_VXGI=1”); and set it to 0, same with WITH_FLEX. Not sure about HairWorks, but really that does not have an impact on shader compiling like VXGI can.