Thank you for providing this information. Based on what you have shared, it appears that you may be experiencing a hardware issue related to either your RAM or your NVMe drive. Here are some steps you can take to troubleshoot the issue:
1. Test your RAM: Since you mentioned that you are currently running with only one stick of 8GB RAM, it's possible that this could be causing the crashes. Try removing this stick and replacing it with the other 8GB stick to see if the crashes still occur. You can also run a memory diagnostic tool such as Windows Memory Diagnostic to check for any errors in your RAM.
2. Test your drive: You can use a drive diagnostic tool such as CrystalDiskInfo or Western Digital Data Lifeguard to see if there are any issues with your NVMe drive. Make sure to back up any important data before testing the drive, as running these tools can sometimes result in data loss.
3. Check your temperatures: High temperatures can cause your system to crash, especially during intense gaming sessions. Use a program such as HWMonitor to monitor your CPU and GPU temperatures while gaming to see if they are spiking to unsafe levels.
4. Update your drivers: Make sure that all of your drivers are up to date, especially your graphics card driver. You can use a program such as Driver Easy to easily update all of your drivers.
5. Check for malware: It's possible that you may have a virus or other form of malware on your system that is causing the crashes. Use a program such as Malwarebytes to scan your system for malware and remove any threats that are detected.
I hope these steps help you to troubleshoot and resolve the issue. Let me know if you have any questions or concerns.