well it could be faster but i doubt you can do it. hm.. i heard that the jornada 680 can go to 65k colours with a simple reghack instead of using the updated ddi.dll, but i never managed to find the description of the reghack. if it really exists, it could work on the PHH as well
anyway every pda that has a higher resolution than qvga or hvga, has this problem to an extent, more or less.
vga ppcs, even in qvga mode, hpc's
(i've tried several that has a higher resolution than hvga
)..
oh and are you lucky to have a PHH? there are a LOT of them on ebay right now... at a great price with two years warranty