Hello,
Unfortunately, as much as we wish there is a "final indefinite fix", that simply is not possible. Most WASM crashes are either extremely specific to a certain routing, departure, arrival or specific action done on the aircraft and even if properly reported to us, we sometimes may not be able to reliably reproduce the specific issue to fix it. I understand it is VERY frustrating and I assure you, we feel that frustration right alongside you. We have fixed hundreds of reported WASM crashes already and continue to do so. Regardless, MS/Asobo are actively looking into further WASM stability that will hopefully stabilise it going forward.
If you have the time and would be willing to help, getting us steps to reproduce this will help us at least investigate the specific WASM crash you have experienced:
Thank you for your understanding and we sincerely apologise for the inconvenience.
Have a lovely rest of your week! 🙂