I have this issue all the time since the latest 1.1.14v Update. In fact is it so bad, I am no longer flying the A350 on MSFS24 until a new update has been pushed.
The aircraft does nothing but crash my sim and constant WASM Crashes, the performance of it is dreadful. Now, I am not here to bash the aircraft because it is visually stunning but they need to work on it seriously. I have a RTX 5080, 7800X3D & 64GB DDR5 Ram, the most I get with this aircraft is 60fps with FG. Other products I easily get 100fps.