Hi everyone.
This stutter problem seems depending on location.
On my side, always occur on exactly the same area. It’s not a random issue.
For exemple, on the east zone of LFLB on downwind segment, I got less than 5 FPS. It was perfectly smooth just before. Same story when approaching the Lyon vertical. Graphics complexity are not suddenly increasing. It’s systematic and recurrent, whatever graphics parameter, models of plane, mode of game (mutli-player or n ot, real weather or not, …)
I really don’t understand why in a very localized area, performances become abruptly so degraded.
Please fix this 
Fred