Tearing at lock 60 fps - no tear at vsync/60fps

Hello , i had a bit of a performance problem when i try to use vsync the game runs smoothly but i think there is a bit of input lag but when i close vsync and lock my fps on 60 the game tears any idea why/how to fix it? laptop lenovoy507 specis : core i7 16GB ram GTX960m 4GB ram
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