Oh, I’m aware of that, I’ve been testing their SDK months ago. But like SteveElbows mentioned, it’s the Flex SDK, not the UE4 integration. Also since only exists in Nvidias GameWorks repo and not in their UE4 fork, I’m not allowed to distribute the Flex 1.2 SDK source code myself due to the licensing limitations. As soon as the UE4 integration comes live, it’s bound to UE4’s license and there’s no such limit anymore.
Regardless what happens with Flex, I will not merge WaveWorks myself for two reasons: doesn’t work on AMD and Intel GPUs + it had shader conflict with Flex in past.