Sword of Mana lag

I'm tryin to play Sword of Mana for GBA but the slowdown in towns and boss fights is atrocious. This lag does not occur in my cartridge version. I'm currently running VisualBoy Advamce 1.7.2, and the rom was obviously the one downloaded from this website.Anyone have any idea how to fix this? I don't have any of those special graphical settings turned on, and every other game plays just fine. Any input would be great.Thanks in advance.

I haven't noticed any slowdowns in this game.
You could start out by trying 1.8.0 beta.What are you computer specs?

More than high enough to run all of this, i also run a ps2 and ds emulator just fine.**Edit**1.8.0 fixed the problem. Zero lag. Thanks!!