Been a rough day with the sim today. Had CTDs and WASM crashes while attempting to complete a flight between YPPH and VHHH. Noted earlier in the flighty that while I was attempting to manually amend the SEC3 Flight plan using the Airways, it seemed to be amending the Active flight plan. I cancelled the changes so as not to change my active flight plan. I was using this so that I could enter the route to the alternate airport in case of a diversion. In the end I managed to enter the route using directs. Also had the CRZ ALT issue that seems to have been reported by multiple users. The flight was in MSFS24. Going to see if I can finish the flight before the next CTD if not, I may park the A350 till the next update.