All indications are that Vulkan is yet years (plural) away . Kate and Chizh have both made statements to that
effect , though without that precise language .
I further fear the implementations of features such as dynamic weather , new effects , higher res models etc , etc will lead to further performance degradation in VR well before the engine changes arrive .
Perhaps we can change ED's mind regarding DLSS 2.0 to help keep DCS playable in the interim , at least on the graphics side .