I am always annoyed by etherdelta's user interface. It is hard to use usually in mobile device and hard to scroll down especially when buying or selling. Unlike other trading sites have good UI. I can't stop using etherdelta because most of my tokens are only tradable in their slow site.
yes it is true etherdelta market is very slow, if you access using mobile phone must use a good connection,
and may have to use the phone with sufficient specifications to be able to access the market smoothly