Question Cpu Core jumping from 0% to 100% every second

Feb 25, 2021
hi, im running Ryzen 5 3600 with Gtx 1660 and 16gb 3200mhz ram.
And i have problem with my cpu, jumping from 0% core usage to 100% core usage while gaming. (here is picture )
this same thing was doing my old Ryzen 3 3100, i replace it because i though this is caused by Bootleneck.
but it keeps doing the same on r5 3600 and my games stutter because of it....
this happening even when my game is paused, and im alt tabed..
i tryied disable Global C-states in bios= no fix
what i can do to prevent my Cpu behave like this?? all drivers are latest.
when pc is idle, everthing is fine.