RetroarchのBeetle PSXコアでCPU速度を70%以下に下げたらダビスタ99が動いたぞ
https://i.imgur.com/Vhfwd1B.png

Beetle PSX - Libretro/RetroArch - CPU Overclocking - Now available!
https://www.reddit.com/r/emulation/comments/7wa4al/beetle_psx_libretroretroarch_cpu_overclocking_now/