weird problem

[SOLOKing]

hello
i got this weird problem
game is running very well suddenly it shutters a little bit and continue
this problem is killing me i tried every possible solution with no luck
GPU = gtx 980
ram 16
internet speed = D240 U60 Ping7
i tried multiple browsers including chrome and firefox and edge

i uploaded my problem here
check this video :

https://www.youtube.com/watch?v=etwxQq_X6Q4