Monster hunter tri lagging

I have read that anyone run game of psx2 can run game of wii, but a run monster hunter 2 on psx2 and when i open monster hunter tri the menu are very quick but when im in the game its very slowly, can you help me please ? ( scuze me for my bad english I speak french )

Well, that statement is kind of not accurate, from what I hear it takes more power to run psx2 then running the wii, just because the emulator for psx2 requires more power. Im not sure why its running slowly outside the menu, you might want to check the emulators compatibility list.