As the OP have stated, we have tried to diagnose and troubleshoot this issue on Zendesk and haven’t been able to resolve this issue and we would really like to know what is causing this since it is rare that we are not able to find a solution for this issue.
To help other users assist OP with this issue, below you can find all the things we have tried on Zendesk to try and resolve this issue so you can maybe try and find some new things to try. As the OP stated, it could be that the issue is with the motherboard and/or CPU.
Error code that the sim gives is 0xc0000005.
- We have tried everything listed in the article: How to troubleshoot faulting module ucrtbase.dll and/or exception code 0xc0000005 crashes - Official Microsoft Flight Simulator / Tips & Troubleshooting - Microsoft Flight Simulator Forums
- Fresh install of Windows 11 to new SSD
- Updating Samsung Nvme SSD firmware
- Disabling all non-essential background tasks
- Disabling/uninstalling all background applications we could see crashing on the logs
- Deleting Cloud Save
- New Power Supply
- New GPU
- New RAM
- Updating BIOS to the latest version
- Disabling any default overclocks on CPU/GPU
- Undervolting GPU
- Tested with and without memory XMP profile
- Stress testing CPU/GPU/Memory to ensure none of these parts are crashing under full load
- Checking that none of the parts are overheating during full load
- Disconnecting all USB devices to ensure these are not causing the issue
@DeviantCelt: One thing you didn’t confirm on Zendesk was did you try and clean install Windows 10 to see if the issue persists?