First try restarting. That helps sometimez when my games start slowing down. 2nd try using boost. 3rd try frameskip settings as well. Those may improve your performance.
Make sure you have the memory cards set properly in the settings. Pal to ntsc should not make a big difference. Also make sure fpse is set for pal games and not ntsc since thats the default.
I have a xperia now and I would highly recomend it over the droid 2. Its faster and the game controls work very well. And it even solved a few of the mini game glitches. Best of luck with the choice.
My droid Ran fpse perfectly at a constant 60 fps. It was stock not rooted. I had no issues playing any games. The keyboard worked pretty well for controls when sett properly.