Try.
How to delete game cache
1 Start your PC in safe mode
- Click start
- Click power icon
- Press and hold left SHIFT key and click restart
- Select Troubleshoot > advanced options > startup settings > restart
- Select 4 - Enable safe mode
2 Click start and type
%localappdata%\D3DSCache
Press Enter
Delete all folders
3 Click start and type
%APPDATA%\..\LocalLow\Nvidia\PerDriverVersion\DXCache
Press enter
Delete all files
4 Type
%localappdata%\Nvidia\GLCache
Press enter
Delete all folders
5 type
%appdata%\NVIDIAComputeCache
Press enter
Delete all folders
6 type
%localappdata%\Packages\Microsoft.FlightSimulator_8wekyb3d8bbwe\LocalCache\SceneryIndexes
Delete all files
Restart PC
7 Click “start” and type storage settings - press enter
8 Click temporary files > scroll down > check box DirectX Shader Cache
9 scroll up > click Remove Files
10 Restart PC.
11 Launch MSFS. Delete and turn off rolling cache.