I've noticed some issues which seem to be introduced in the beta patch:
1) online, after about 15 minutes flying sound became corrupted and then cut out completely, after a minute or so it came back. Did that several times until finally all sound was gone and didn't come back.
2) When I fired my guns at the plane in front, the game momentarily stutters (lucky for that Spit).
3) Short dogfight follows (I've noticed the switching of LODs of the enemy AC even though we were never more then ~600m apart). Game stutters once more, and Launcher.exe crash
In short:
I didn't have sound problems before
I didn't have launcher crashes before
FPS has improved signifficantly
BTW, slightly off topic: Why is the mouse look in CoD limited to 90 degrees regardless of FOV? Pan view (using a hat switch) allows full range of view but it is not smooth (jerky, rough pan view switching gives me a nasty headache) making it almost impossible to track the enemy using the pan view.
In Il-2 I bound the "mouselook" to hat switch (hat emulating mouse) to get the smooth pan view. How can one do the same in Cod? I really miss the simple and efficient mouse view of Il-2.. ;..-(