Hi,
it was in special for the “Auckland discovery flight” , but may be it helps anyway.
Yes, this folders and also “cache”. Removal of the simobjects may be as a second step, because this contains some “states” about the planes.
The rolling cache file ( ROL…CCC ) can you also remove in explorer and MSFS recreate it auto in default location. I just often clean it within the game-menu itself to be sure that my “own” folder is used ( I assume rolling.cache was the main culprit ).
A note related to this:
There is a topic where we discuss that problem. Unfortunality not yet a final consense about “what cause that”. Some user report that underclock the gpu or disabling xmp mode was helpfull, which match with an assumption about a system problem in special in long-time flight. But as sayd, not final clarified.