My PC has been underperforming for a while and i can't understand why, even with games like Fallout 4 at the lowest settings has really low fps, what happen is, when I boot up the game (No matter which one) everything runs smooth but like after a minute or two the fps drops drastically to like 10/ 20 fps. Here are my specs
it's a asus ROG, i don't remember wich model I can look it up if it's relevant.

it's a asus ROG, i don't remember wich model I can look it up if it's relevant.