Warhammer 40.000 squad command

hi, i'm using NoCashGba 2,5 and i'm playing Warhammer 40.000. my question is, it always freezes
when i started it. is this the Emulator, the Computer, or the Rom(no hard feelings) that is broken?

Most likely not the rom, what exactly happens, does it stutter up and freeze or it does turn black etc.?