Windows allows you to adjust the focus of your PC to either power efficiency or improved performance.
- When set to Best Power Efficiency the computer will slow down processes in order to conserve power.
- When set to Best Performance the computer will run faster and consume more power.
Most PCs are set to the Balanced setting, which is a good mix of power efficiency and performance.
To change your power mode please visit the Microsoft Help Article, Change the Power Mode for your Windows PC.
If you are following the series of articles in How do I troubleshoot low frame rate (FPS) in Fortnite? and this did not solve the issue try the next step in our troubleshooting: How do I adjust Graphic Quality to boost frame rate (FPS)?