Well I've got no performance gain.
The game was running smooth before and is doing the same now.
No hickups at all i'm between 45 and 78 fps when looking backwards in start there is a slight improvement was 17 fps and is now 24 fps.
Some strange things are happening the throttle( a slaugh on it) in the 109 E3 is sort of transparent.same sort of thing is happening in the hurry but now on the steering collum as there is a flickering texture under de word closed.
The throttle action is changed now ideling will make me move forward at some speed already.
In landing there is a notisable ground effect keeping the plane in the air ( to) long
Same effect is not there while taking off.
The Britsh planes seem to swerve alot wile firing trowing of the aim.
The flickering shadows are still pressent and annoying

No game chrashes in several hours play, but then i dint have them to often anyhow

I'm still using the RAM disk wich gave me the highest performance boost.
the game is is running slick and gives a nice impression of the channel war before The Battle of Britain its self.
Cheers.