A few months ago, I raised awareness about how the FPS on the flight simulator was deteriorating over time even when idle on the tarmac. Because of this I stopped playing the sim for quite some time, but recently I decided to see if the Devs had done anything about it, only to be met with the same issue but slightly worse because this time the FPS deterioration was almost instant.
To sum up, I just wanted to bring back awareness to this issue because for me it makes the sim unplayable.