Thanks @Tgames I suspect any game that when accessing the highscore table freezes/crashes UniBIOS can be fixed using this trick (but I've only personally tested so many games).
|Darksoft: CPS3, CPS2, F3, MVS|
RGB: RECO v2, HAS v3
invzim: Jammafier v1.6b
XianXi: JNX Raiden, SC Taito Classic, SC Sega System 16/24
Frank_fjs: JAMMA Extender (Special Edition)