There are a few reasons why your PlayStation 4 fan might get loud when you’re playing games. One reason is that the fan’s impeller may be spinning too fast, which can cause it to make a loud noise. Another reason is that the fan may be overloading, which can cause it to make a loud noise and also create heat. Finally, the fan might not be working properly, which can cause it to make a loud noise and also create heat. If you experience any of these problems, please take your PlayStation 4 to an authorized service provider to have it fixed.