Let's wait for the BSOD. You may want to monitor the CPU/GPU temperature as well since the system reboots when playing a game.
Troubleshooting using Driver Verifier is another option.
(Create a Restore Point before enabling Driver Verifier.)
See:
Driver Verifier-- tracking down a misbehaving driver. - Microsoft Community:
https://answers.microsoft.com/en-us/windows/for...
Important: If Windows doesn't boot after enabling the Driver Verifier, boot into WinRE using the following method:
Turn off the computer.
Turn on the computer, but while it is booting, turn off the power.
Turn on the computer, but while it is booting, turn off the power.
Turn on the computer, but while it is booting, turn off the power.
Turn on the computer and wait.
After three failed reboot attempts, Windows goes into the Recovery Environment.
From there, click Troubleshoot - Advanced Option - Startup Settings and click Restart
Upon restart, press 4 to enter Safe Mode
Open Command Prompt as Administrator and run these two commands, then restart your PC.
verifier /reset