neat sample, needs minor cleanup to compile on my VS2019 solution. may not be anything wrong with the right environment, etc. just my config:
several #include <iostreams>
disabled 'treat errors as warnings'.
https://developer.nvidia.com/blog/implementing-stochastic-lod-with-microsoft-dxr/
several live objects after sample executes/shuts down, not going to resolve at this time.