Thanks for sharing FamishedBurrito! If you'd like further assistance with your freezing issue, please submit your MSINFO and dxdiag files on a ticket.
This solved my problem :
- Go to Nvidia Control Panel
- Manage 3D Settings
- Program Settings, then add rainbowsix.exe
- Monitor Technology : G-Sync
- Preferred refresh rate : Highest Available
- Vertical Sync : Fast (Most important part)