[SOLVED] Internet causing lag in offline games

[Bugplayer]

Sup people!

I come here to ask about an issue I noticed.
Whenever I'll be playing a game, occasionally I'll get some random lag spikes, and it doesn't matter if it's online or not, of which game I'm playing.

And each time this happen, I get a spike in the Ethernet graph in Task Manager.
No spikes are seen on the GPU and CPU when this happens, it's only the Ethernet.

If any of you would help me with this that would be super appreciated.
My hardware is:

Nvidia Geforce GTX 1060 6GB
Ryzen 5 2600X
16 GB of Ram, G.SKILL Aegis DDR4 SDRAM 3000mhz
B450M GAMING PLUS Motherboard
Windows 10

I know that the first thing I should do is check out what's using the bandwidth, which I did. First it was Cortana which I have now completely wiped out of my system.
It did improve the performance but I still get the same issue, just not as often. As a result, I assume the problem will persiste no matter what is using the internet.

 

[Bugplayer]

Update:

After installing MSI Afterburner, turns out my GPU is just hitting it's limits, something I was not able to see in Task Manager.
Just saying because I don't know how delete this thread.