Intel 530 Video Lags

I have an intel hd graphics 530 and at an h hour at h.15 - h.30 - h.45 - h.00 I have this video lag be it a game or a video or while hovering the mouse. I noticed from task manager that each time the video lag happens the process System (which is called from the properties ntoskrnl from 0,1% suddenly hits about 5,9% of CPU. So I thought it's related to my problem. Please let me know if you have the same problem and if you know a way to fix it!