When run the benchmark, all I get are 2 background processes called "UE4 Game" that stop within a second of starting. I have tried running all three executables on both my dedicated graphics (GTX 1050) and my integrated graphics (Intel HD 630), getting the result mentioned before every time.
dxdiag: https://imgur.com/a/zAPFfzM
EDIT: There are no crash reports I could find, and I am using the latest version (1.2.1)