I find it more stable but I have not tried any long flights over 2hr.
I also don’t think that was part of the beta testing.
I can say that the Hotas saving issue is fixed on Xbox and I have airports that would CTD with SU7 that work now
They don’t list particular stability fixes
“ Stability
- Several crashes have been fixed across the title
- Ongoing performance optimization work
- Lower GPU consumption when installing packages while the sim is booting
- Lower GPU consumption when the main window is minimized”