Low FPS and Stutter with i5-8600K and 1080Ti

[mandocale]

I recently upgraded my buld, got a MSI 370-A Pro, a i5-8600k and a Zotac 1080ti FE.

The thing is, I'm having 45fps in AC: Origins with settings: 1080p @ultra, and 50fps with heavy stutter in FF XV

I've seen people with the same building getting +110 fps on both games.

OS: Windows 10
Ram: 8GB HyperX 2400mhz

And yes, the card is connected to the right x16 slot.

 

[2sidedpolygon]

What's your GPU usage at while playing?

 

[mandocale]

What's your GPU usage at while playing?

My GPU usage hovers between 60% and 70%, when upscaling, the usage reaches 90% but the framerate and the CPU Usage remains the same.