I can confirm the fps drops. after 1-2 hours, even on my 4090, the fps drops from 120 to 60. in addition, there are small stutters. i noticed that the graphics card only runs at 30%. after restarting the flight sim, it works at 80% again.
@asobo fix please! we paid a lot of money for our hardware. then the performance should also last more than 1 hour!