Firstly, people need to stop expecting miracles and start reading instruction manuals.
A potato peeler, bounced potatoes around against a scouring surface until most of the skin is removed. I said most of the skin because potatoes are not always the most helpful of things :-) They are irregularly shaped and can have very large indentations that stop the scouring surface coming into contact with ALL of the potato surface.
This can lead to some parts of the potato not being scraped every time. If you realise this, you will get on just fine with your new level of expectation :-)
Secondly, it does say in the manual, HOLD the unit FIRMLY on the top, that is to stop it bouncing all over the place with nearly 1KG of potatoes going mad inside it like a popcorn maker! LOL
Does it work, yes it works fine. Does it need a 500 horse power motor to do that, no it doesnt. If your jamming the motor, your doing it wrong!
(P.S. You do not need to peel potatoes for 10 minutes, hence why the motor was only DESIGNED to run for a few minutes, run it over that and yes, of course it might not like it, again, YOU are doing it wrong!)
So far my potatoes have come out fine, apart from the odd one, that was weirdly shaped (not the machines fault!) and any with deep eyes, that need to be removed with a knife. Though the vast majority come out just fine.
And its a heck of a lot easier than standing there for a week with a vegetable peeler and hand cramps :-)
If you hate peeling and love mash, give it a go.
I got it for my Tefal Actifry and it has helped me make chips and roast potatoes that were just lovely.