OK, after read hundreds of threads and replies, I have more findings:
- This issue happens ONLY IF you are flying in some specific region. I tested the following regions (Y=Issue happens, N=No issue):
- Yes: CYVR, Vancouver, British Columbia, Canada
- Yes: ZBAA, Beijing, China
- No: Some other EU countries
- There’s another thread mentions the same issue in entire
British Columbia(I can’t verify all cities in BC
): https://forums.flightsimulator.com/t/cpu-spikes-and-fps-drop-while-over-british-columbia @Zeanuck Zeanuck - Search for “Canada” in the famous post: After playing a few hours, FPS drops from 40 to 5FPS , there’s few replies that mentioned “Canada” but seems lost in the huge threads.
I tested a few more cases tonight. And the following scenarios happened:
- No matter what airport the aircraft is located, this issue ONLY happens when ARRIVAL airport is pre-defined in pre-flight screen.
- When fps drops, I can fix it IMMEDIATELY right after clearing the destination in flight assistant.
- If I set the destination again, issue never appears again in the same flight.