Download the driver from the official OEM link, overclock the polling rate with Hidusb, and you will never look at a standard gamepad the same way again.
For modern games, you want Windows to recognize the X3 as an . gamepad x3 driver
It sounds like you’re referring to a blog post about a — likely something related to a third-party controller, possibly the GameSir X3 (a telescopic controller for mobile gaming) or a generic “X3” model. Download the driver from the official OEM link,