Game freeze in campaign

[PostumusAgrippa]

Flew my campaign mission, completed the objective, hit the exit point, made it back to base, and landed.  Once I'm on the ground and I got the "you have landed" text, I hit escape and finish mission.  The camera goes to third person, plane disappears, but then nothing happens.  The game just sits there with a view of the airfield, no motion, and the scratchy radio effect is looping in the background.  Once I alt-tab, I cannot get the game to maximize again.

 

The only thing I did differently on this mission was to hit finish mission like half a second after I successfully landed, a little quicker than normal, because I was frustrated after wasting 20 minutes the previous mission due to not hitting the exit point and then running out of fuel on my landing run (0 xp).

[sturmkraehe]

Have the same since one or two days. I also just got a cdt from exiting a mp server. Program stability got worse recently. Much worse.