Tutorial on performing the Gamecube controller capacitor mod that eliminates all snapback for consistent aerial neutral-B directions (read the video description for additional informative posts) : r/SSBM
HOW TO GET 0ms DS4 WINDOWS AND CONNECT YOUR CONTROLLER BLUETOOTH PC (WIRELESS NO INPUT DELAY!) - YouTube
Controller not behaving correctly in-game - DS4Windows Docs
What is Snapback in Gamecube Controllers? Explanation video by Top Notch Controllers : r/SSBM