are you sure that the gps software actually handles more than 1 hz updates i am not sure that it will update at the speed of the gps device ?
Has anyone heard of this receiver? they advertise a refresh rate of up to 10hz. even if you could get 3-4hz, it would look sooo much better with a smoother update on any mapping software. as far as i know, all the current solutions are only around 1hz (please correct me if i'm wrong). here is the link: