No, an i5 4590 is not powerful enough for smooth CS:GO gameplay.
No, an i5 4590 is not powerful enough for smooth CS:GO gameplay.
I once started my school PC on an older Windows 7 version without admin tools or firewalls. After installing CSGO, I managed to get around 40 frames per second on a laptop with an i3-5005U and 4GB RAM using a 1366x768 resolution.