“MAGICAL FANTASY ADVENTURE - POPFUL MAIL" get stuck through cg scene

[hz3353783]

Using core NEC - PC Engine/SuperGrafx/CD(Beetle PCE) (ver.1.29) in Retroarch,the game has a seriously graphic glitch through cg scene.
Please check a screenshot sample here:
https://1drv.ms/u/s!AmFlDfSxKSHGdGY6-4jDuNv3oUg?e=KhrcUE

[hz3353783]

Besides,the game dump is actually a good dump which has been proved by another emulotor I used——Ootake,which running the game without any graphic glitchs.

[hz3353783]

Alright.....there may a way makes the game run well, which was found by RetroAchievements Official forum topic, just set the CD Speed to 8 in the core settings, I will try and find out the truth, any result will be updated here.