Sony's PS5 DualSense controller's drift issue is a hardware problem
Sony is currently dealing with a class action lawsuit against faulty PS5 controllers and the law firm is looking for free replacements.
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PS5 Controller Drift: Understanding and Fixing the Issue - GadgetMates
Sony PlayStation 5 DualSense controller is reportedly facing 'drift' issues
PS5 DualSense Controller Drift: Everything You Need to Know - IGN
PS5 DualSense controllers already have a drift problem — what you need to know
Sony PS5 DualSense Drift Class Action Lawsuit