I've had some cables fail, which means I've woken up and nothing has charged but never measured charge rate with selection of them. It's not like that "it sounds better with £100 audiophile cables" marketing ball locks is it? If charge rate was a concern I'd probably move to USB-C stuff
That's a thing? I wonder if that's why my powerbank has taken all night and still isn't full. Never really paid attention to how long it takes though.