Yes that is the official weight limit, but speaking as someone who has one and weighs 20% more, it works totally fine.
Not sure why you think it struggles - even with the official firmware it easily and quickly gets up to 16mph. Sure you get a bit less range than a lighter person, but the difference isn't huge.
Not sure why you think it struggles - even with the official firmware it easily and quickly gets up to 16mph. Sure you get a bit less range than a lighter person, but the difference isn't huge.