DraStic

So the only reason I got drastic was because of this game. it was my favorite. anyways I tried so many emulators for ds and they all worked good on this game but very very laggy so when I tried this emulator it was really fast so I was pretty happy until I got to a point of the game and where it took me out of the game I tried again Same thing. I tried deleting the rom and downloading again and it's the same problem please help me!! it was my favorite game since my childhood!!

I'm using the last version r2.4.0.0a build 80

All the other games worked and I also have many storage space.