Weird FPS

[vilianbb]

Okay so basically, this is more like a question than a problem...But it actually is kind of problematic for me.

 

Quick note: My setup (1060 with slight overclock, r7 2700 @ 4ghz 1.3v, 16 ram and a SATA 3 SSD.

 

So, league of legends, right? Everyone has heard of that game and everyone knows that it is designed to run on potatoes. But how comes when I record with obs to my HDD using VBR @25 000kbs with CPU usage preset set to "faster" and profile set to high that my game starts becoming laggy? (fps drops and shit)

Well, At first I thought that my CPU was at 100%, so I opened MSI afterburner overlay (which I have set to display CPU, GPU usage clocks, and that kind of stuff) and I was surprised. My GPU was sitting at nearly 20%-30% and my CPU usage was just shy of 60%.

So, I'm a tech enthusiast but I don't really understand what the hell is going on. Why is my game dipping below 50 fps and my CPU and GPU usage are lower than 60%?
In case you are wondering, I'm sitting on Ultra Setting in League, and my FPS is uncapped.
Could you perhaps give me an explanation of what is going on?

Thanks.

[DeScruff]

Are you using game capture or display capture in OBS?

[vilianbb]

1 minute ago, DeScruff said:

Are you using game capture or display capture in OBS?

Display Capture

[DeScruff]

Just now, vilianbb said:

Display Capture

Switch to Game see if that makes any difference.
It might be like how some games the difference between borderless windowed and fullscreen is night and day in terms of performance.

[vilianbb]

19 minutes ago, DeScruff said:

Switch to Game see if that makes any difference.
It might be like how some games the difference between borderless windowed and fullscreen is night and day in terms of performance.

Just tested it. 
I'd say the effect is probably the same.

But it's not just league and OBS.
I've noticed similar behavior in games such as World of warcraft. I'd be staying in an empty zone with CPU and GPU sitting at 30% and fps that does not go higher than 40.