Need help with Combat Flight Sim 2.

[Gl4di4tor]

I?ve been trying to fix an instability problem with cfs 2, when I?m playing a session (usually quick combat) the game completely shuts itself off after a random amount of time, it?s not like it crashes it just turns off in the middle of the game. If anyone has any clue as to what is causing this, please post, I would appreciate it.