Emulator difficulty in processing Melee

[username]

After playing Super Smash melee on Dolphin Version 5.0-9156. The FPS drops when the emulator 1) process a new stage and 2) when a button is pressed for the first time or a move/attack is used for the first time in the match? I think the reason for this is the inefficient algorithm used to introduce/process a move or a new stage from the game.