So the last few flights I have done have ended bad. I like to do long haul flights. Lately like the last 4 flight I have done about mid way or a few hours into the flight everything is going great and I will change the view or try to bring up the FMS or another instrument (PMDG MD-11 or 747) and the flight freezes. There will still be sound and it freezes for like 20 sec then i get the error message and FS resets. It is VERY frustrating as I am in Iraq and this is something I love to do to pass time. Im to the point where i dont want to even bother with a flight because of this. Im fed up now. Any ideas of why this is happening?