I have my desktop in clone mode, and I'm getting desktop screen tearing, very noticeably. In NVIDIA Control Panel, under 'Set up multiple displays': If I set Display 1 as primary clone, both displays are stuck on 60hz, and I get screen tearing on Display 2 (moving windows, watching movie, everything..). If I set Display 2 as primary clone, both displays are stuck on 59hz, and I get screen tearing on Display 1 (desktop, movies, everything..). Display 1 only allows itself to be set to 59hz in single-display mode, and Display 2 can only be set to 60hz in single-display mode. I don't know if this is related to the issue, I'm only guessing. There is no tearing in single-display mode. How can I troubleshoot this? Is there something obvious to try to eliminate tearing on both screens? Windows 7 x64, Aero on 2x GTX 275 SLI Forceware 197.45 Both displays plugged into 1 video card.