I have verified intergrity of my game files, uninstalled and reinstalled the game, changed resolution, lowered graphic settings to as low as possible. No matter what I do this game never runs for a substantial amount of time before it crashes my PC and fully restarts it. All I want is to be able to enjoy your game again like I used to years ago, but this issue is going to force me to quit the game unless this issue is resolved.
Thank you for your time, Telly
Hello @Tellurical, and welcome to Discussions.
I'm sorry to hear that you are experiencing crashes when playing Rainbow Six Siege.
Thank you for sharing what troubleshooting steps you have done already. 
Please have a look, and perform these steps as per the instructions. They have been designed to help resolving a large amount of general issues.
To go even further, could you please try to completely reinstall the game on another storage space device?
Also, what are you PC specs?
devtrackers.gg