Idk if it helps, I played the game on my Second Monitor while I had the main Focus on the other one, only happend when i didnt focused the game, but all in all its a nice game and really fun inc. game!
Had now 2 Times that my Game went Gray and I had to replay 2 Days
I think its sad, that the Demo ends so fast and that you lose you progress, would it be possible to keep playing just without getting new R&D?