[oniisan608]

The HTC Performance program you have installed doesn't do anything for the Mogul's chipset. It was written for older phones. Any speed boost you think you might be getting is merely placebo. No one's written or been able to write a program to overclock the Mogul.

As for your issue, running SPB Shell can sometimes slow things down just because it's a somewhat graphic intensive program.

Also, Unlike WinMo 2003, you can't sacrifice storage for memory.

I might suggest upping the GLYPHCACHE in your registry. A simple search will probably reveal which values will give the most benefit.