I’m experiencing severe FPS drops (single-digit FPS, i.e. 5 FPS) specifically when rolling on the runway during takeoff and landing. When this occurs, it often results in my overall FPS being cut in half (or worse) for the rest of the session, requiring a full sim restart to recover.
Sometimes, FPS partially recovers (around 80% of normal) after takeoff or returning to the main menu, but a full restart is usually needed.
This issue happens on both analog and glass cockpit aircraft. It does not happen on helicopters (since it doesnt roll on runways during takeoff/landing).
It was present in SU1, though not consistently, even when testing at the same airport with the same aircraft. It does also happen in different airports. However, so far, in SU2, it happens more frequently (worse performance overall).
If this were purely a system specification issue, I would expect the FPS drop to be persistent and consistent. However, since it does not always happen under the same conditions, this inconsistency suggests another underlying cause.