Thanks! Installation went pretty smooth except I don't understand how to install the FakerInput driver. The link sends me to Github, and I can see where to download the package as a zip file, but it doesn't contain any installation files. This seems like source code or something? I can read a little programming, but am not a programmer. Maybe I am clicking the wrong download link?
Unfortunately it doesn't seem to support the controller I am trying to use. (Ds4Windows doesn't seem to recognize my controller?) Then I saw this and thought I would share for those who are new to Ds4Windows. You might want to check out the supported controller list first; https://ds4-windows.com/supported-controllers/.
The main goal is to use these PowerA GameCube style controllers for GameCube and N64. They are very nice, and feel almost like the original GameCube controllers. https://www.amazon.com/PowerA-Wireless-Controller-Nintendo-Switch-GameCube/dp/B07GXLBCC3. I emailed the Ds4Windows devs asking if they had any plans to add them to the compatibility list. We'll see what happens.