Hi, thanks for the response. I'll add this to my question aswell.
CPU - i5 4670k
GPU - MSI GTX 770 Lightning
MOBO - MSI Z87-G45 Gaming
RAM - 2x4GB Corsair Vengeance
Windows 10, 64bit
I do not remember when the problem started occurring or if I had done anything (update, install, etc.) before...