Do you have an integrated graphics card also? Is it possible the game is trying to use that instead of your GTX 960? Some of these steps might help: GUIDE: Maximizing System Performance for Overwatch (PC)
Do you have an integrated graphics card also? Is it possible the game is trying to use that instead of your GTX 960? Some of these steps might help: GUIDE: Maximizing System Performance for Overwatch (PC)