> For the complete documentation index, see [llms.txt](https://docs.facefusion.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.facefusion.io/3.6.1/troubleshooting/windows.md).

# Windows

#### Upgrading to Windows 11 caused a performance hit

Turn off real-time search in Windows Defender or exclude temporary resources.

#### DLL load failed while importing cv2

The absence of the Media Feature Pack can lead to issues with OpenCV.