Basemaps are slow in Flex Viewer

Hi,

I wondered if this has ever been brought up?

We are in the process of moving to a new server and 10.1 Arcserver, and I started testing the speed of zooming in and out of a 10 level basemap by rolling the mouse quickly. Going through from level 1, all the way through to level 10 actually had a very slow response rolling the mouse. That was weird because the server wasn't under pressure.

I then tried the same basemaps in a javascript viewer and the basemap flew when going from level 1 through level 10.

I did more analysis and found that if you use the navigation scales in the flex viewer, it actually is very responsive from going from level 1 to 10 rapidly.
And the same could be said for using the zoom in and zoom out tool...it works rapidly.

I then tried these same processes on our current server....same results.
And I tried it in both flex viewer 2.3.1 and 3 and no difference.

I can tell that when you roll through, the flex viewer request each level of the cache. Is there anything I can do to stop that (and that cold be implemented in future) and only request the basemap layer if the users has actually stopped at that level?

Thanks,
Todd