Question The CPU 0 is low than the others

[SakakiKomachi]

When my pc in use for couple hours the CPU 0 is low. But, when I restarted my pc the cpu is back to normal but then went 0 sometimes. It's kinda annoying and causes lags so bad.

I tried:
1. Monitoring my temp and its always below 70c degrees.
2. Reinstalling my Windows but still.
3. Repaste but still.

My rig:
i3-9100F
GTX 1660 6GB
RAM 16GB
4 HDDs 1 NVME
be quiet! System Power 8 500w

Here's the image (I can't upload the file by insert image link):

https://imgur.com/a/6qrill0

View: https://imgur.com/a/6qrill0

 

[Ralston18]

Update your post to include full system hardware specs and OS information.

PSU: make, model, wattage, age, condition (original to build, new, refurbished, used)?

Disk drives: make, model, capacity, how full?

Attached peripherals?

 

[SakakiKomachi]

Update your post to include full system hardware specs and OS information.

PSU: make, model, wattage, age, condition (original to build, new, refurbished, used)?

Disk drives: make, model, capacity, how full?

Attached peripherals?

Okaayy