query on the tomtom software

hi people

i have a HP IPAQ 4700 with the new bluetooth gps reciever, the Rikaline 6033. i have it setup and all working no problems at all the only, problem i have is when i driving along any road any part of the uk and it still refresh the page or updates the position, of where i am really slow. it is not as smooth running like the original tomtom 300, if you understand what i mean. its is really jittery, moves every along the map every 1 second. its isnt smooth flowing. what would the problem of this be?

whow do i solve this would it be the refresh or update rate of the bluetooth unit to the pda???

please help

Have you tried disabling all of your POI's??