AMAZING!
with 32768 I got an additional 0.6FPS above the normal speed on my iPaq H3955
8192 = 7.8 FPS
16384 = 8.0 FPS
32768 = 8.4 FPS
8192 is the normal setting that all PocketPCs use by default. Y'all with lots of free program memory better get to it with this setting. This is running faster than it did on my old 486/66! Dare I double the memory limit once more? 65536 ... that's CRAZY! I'm doing it!
[EDIT]
65536 = 8.0 FPS
Looks like 32768 is the best value, anything more and it gets to be too much.

... oh well! 8.4FPS is fast enough for me, especially when it's just a simple registry hack!
This makes it run as fast as regular StrongARM 206MHz, also, or nearly as fast. It's faster than the H3800 series PocketPC and only slightly slower than the H3600 series