We are using Version 3 with great success, however some users are having issues with the speed at which the maps displays update, this can take from fractions of a second to as much as 5 minutes or more. One example was to view 10 vehicle locations, but refreshing the map caused the application to all but hang until the webpage finally displayed, this took almost 5 minutes, which is making the application unusable.

I am struggling to understand where this issue might be as most customers are not having internet issue, their broadband connections are stable and reasonably fast.

Does the rendering of the HTML and Javascript from your control cause an undue overhead when the page is being displayed, are there any tweaks that you could suggest. The datasets are located on dedicated web servers not shared hosting, so the performance of the servers shouldn't be an issue

Most of my application uses a datareader to get the latest vehicle positions, but is also retrieving other info such as speed, lat, long, location, status etc.