Everything slows down and lag at 1060(6gb) (Gears 5)

Dear znatakov!? what could be the problem?
Comp:
I7-6700hq
gtx1060(6gb)
ozu 16
alas the game on the hdd
Wood new, computer is clean.
In the game what settings do not put the wildest Pixies. As Bud puts on a resolution of 800x600
and even ripped picture mobs when peredayutsya can stand still for half a second.
the performance test shows on all settings 45 fps.BUT! during the test fpfs jumps like crazy from 21 to 67 just every second.
put Locke 30 fps and cleaned did not help.
Can anyone come across.
Thanks for the replies