Legend Of Mana - Game freezes during Magic

whenever i use magic in a battle, the game freezes for at least 15 seconds. its really annoying. I downloaded the image so there might be a problem in the file. if theres a patch for this, could you give me a link? tyty

are you using ePSXe???

Press F4 once or twice when it freezes. This toggles on/off the SIO IRQ.