Unfortunately I never did manage to get this fixed. Went down the route of a fresh install of Windows 11 and after a 1 hour and 30 minute flight the sim decided to CTD. The only addons I have listed in the Community folder are: sws-aircraft-kodiak-wheels and orbx-volanta-aerocaches.
I have ran out of ideas really on what is causing this. Will have to come back to MSFS at some point in the future and hope for the best.
Faulting application name: FlightSimulator.exe, version: 1.21.18.0, time stamp: 0x00000000
Faulting module name: FlightSimulator.exe, version: 1.21.18.0, time stamp: 0x00000000
Exception code: 0xc0000005
Fault offset: 0x0000000000b62d55
Faulting process ID: 0x378c
Faulting application start time: 0x01d8047e064423ac
Faulting application path: F:\SteamLibrary\steamapps\common\MicrosoftFlightSimulator\FlightSimulator.exe
Faulting module path: F:\SteamLibrary\steamapps\common\MicrosoftFlightSimulator\FlightSimulator.exe
Report ID: 974a2087-85c0-498c-ab01-e289955a54da
Faulting package full name:
Faulting package-relative application ID: