The 4.18 version only have blast and Flow right now, i should actually update branch as it was published before Nvidia officially released neither of those.
I’ve no experience with Truesky unfortunately (as much as i would like to… ! ^^ $$$ ) The trouble is that Nvidia package are changing the engine source code. Which means that your precompiled plugin might not work (assuming you don’t have access to TrueSky source code).
There might be overlapping requirements/modification in one of the Nvidia GameWorks, If you test the various gameworks to find the one that is causing the we could make a UE4 build without the package causing trouble.
I would start by testing Hairworks