Quasist released this tool, it will increase the speed of your GP2x.

Release notes:

Launching this 9kb untility will increase speed of your gp2x. It is very useable if the programm you want have not inbuilt ramhack, on you do not want use cpu-lcd tweaker untility.

P.S: I use F100 unit with 2.1.1 and standart frontend.
Please report if it works on GMmenu and F200 units