To me it happens the same, but it is microstutter, the game stays in 60 solid FPS with everything in the ultra, but I have very micro that stammer when I run, in no time low of 60 fps, but this microstuttering ...
-Windows 10
-GTX 780 3GbVram (updated drivers) Maximum VRAM consumption is 2300Mb (2.3 GB)
-i7-4770k
-SSD 500Gb
-16Gb RAM
The truth is I do not know what else to do, it's desperate