HWNJ
Developer
In that case, post an issue on GitHub explaining everything with details, including the USB behavior in comparison.Just tried it on USB and FMV stutters aside, Aku-Aku/Uka-Uka dialogues don't skip and the music during races plays.
Without any modes enabled even.
So looks like it's one of those games that expects the same or lower transfer rate as it does on discs.
Maybe if they make a mode to force OPL on reading at a custom max speed it could help (like stating exactly 3000 KB/s or 1000 KB/s or something alike)
Thanks