In addition to the slowness I have another problem.
When I scroll up the tiles, I see correctly the last two tiles (at bottom), but when I remove the finger from the screen all scroll down and I can see only half of the last tiles.
The same behavior is present in the list of applications.
I have a HTC Touch Pro (Raphael) with VGA resolution and WiMo 6.5
There are some settings that I can change in some config files?