I'll try to keep it as simple yet informative.
Running FPse for Android, PSX bios, openGL obtained through the menus. On a DroidX.
I had not compressed the original .iso file at first. I played around with the settings a bit, and I got the game to work passably. My main map showed the dots for the places I could go, but no map until I selected somewhere to move. Some of my character development screens were translucent, and would occasionally overlap and show unselectable items. All of this was fine, as the game was running smooth enough. However, on the battle screens, I experienced a very low fps (not just the fps - the game itself slowed too). Doing a tackle took about 10-15 seconds, and my fps would drop and stay at single digits. So, after playing for awhile, reviewing some other game tips, I went ahead and compressed the iso with PocketISO.
Now, I started with all the same settings I was running. Before compressing, I ran about 45-60 fps except during the battle "cutscenes" I still get down to single digits. After compressing, I was getting a range of about 15-30fps during normal gameplay. However, I no longer have the translucent screens - they appear exactly as I remember they should be (granted, this is 10+year old memory. I turned off pretty much every thing, and tweaked as many different settings and saw practically no difference in gameplay. But now it runs unbearably slow. Is my phone just not powerful enough to run this emulator like it should be, or is there something I am missing. What settings are you all running?