And no matter what I try, it works for varying amounts of time and drops out mid flight, or between flights, if it doesn't just fail on startup. Now I have been having an ongoing challenge with my oculus rift sound. So a big thanks to all who talked me through it. With help from here, I am now purchasing all my other titles direct instead of through steam, like I initially did with Stalingrad and works well, including playing direct off the IL*2 launcher instead of through steam.