Oldish computer maybe air vents are blocked if so inside would need cleaning also.Mind you it would not work ok for a week then start playing up again.
Maybe try Driver Max in case any of your drivers are needing updated.
The Evil Within 2 review-in-progress
Photoshop CC 2018 released with new Curvature Pen and better brush tools
Camera tips to take better iPhone photos
Les meilleures applications de covoiturage 2017