gtx 1060 and vertical sync

Good afternoon. Is there any card gtx 1060 6gb asus strix?
Who can tell precisely why. My same graphics card, when the vertical sync, very wild input lag, and this strange thing is happening through monitoring at a stable 60 fps, the frame time jumps from 16 MS to 21 MS, and if from this the vertical sync to put in afterburner/RivaTuner the Lok 60 fps, the frame time jump stops and rests at 16.6 MS, and at the same time jump input lag is not felt. My friend on the map 1050ti one vertical sync without third-party Loka stable 16.6 MS at 60 fps. Of course I play with afterburners Locke no problem. But still, it's in the map 1060 and its software?

And without vertical sync terrible stuttering.


Recorded even video

- the first video in RivaTuner included Lok 60 fps, the game included vertical synchronization) and the frame time of 16.6 MS and a stable 60 fps

trail video RivaTuner willcan Locke, in game Vert sync enabled and the frame time starts to gallop, though the same 60 fps , and that from these jumps, the office proposes that smoothly then slowly