Ill have a look at it too when home again. Thanks for this input. Although at all other games i don’t have a problem with the new nvidia driver at all but there aren’t also the sound problems.
So I really guess its more a sound issue than a graphics one.
As I said the graphics run more or less the same as before. There are only microstutters when the sound gets disrupted (about every 10-15 sec in flight) together with a high processor load (up to 100%)