help

[brigipson]

i have downloaded mystical ninja starring goemon ok... like when i start the game you start inside a little house thing right ok the rom runs smoothly but when i leave a house going out to the world map my emulator slow way down like from 50% to like 12.5 fps and i'm like wtf how is this happening now i have to note to you that i have a fairly strong computer that runs my other 64 roms fairly smooth so why is this rom giving hell its the only one that does that

[snesmaster40]

Good Name=Mystical Ninja Starring Goemon (E)
Status=Issues (plugin)
Plugin Note=[video] slow