Can someone who sees the slow down happening, confirm if they are using OEM or 3rd party batteries? Like me and couple others mentioned, the battery voltage level doesn't drop much until the battery is really close to 0%, the 50% mark shouldn't be any reasonable limit to start slowing down stuff. Also power(/current) delivery stays good until almost drained empty. That's why it would make sense it's FW decision to start slowing down, instead of the battery directly causing it. But if not everyone sees it, I wonder if there's other factors affecting the speed.