The result? The visual feedback—the scrolling bar of symbols—would desync from the audio. You would press a key in time with the beat, but the game would register it as "Late" or "Early" because the internal timer had drifted. This made achieving a "Cool" rating (the highest) extraordinarily difficult, and in some cases, seemingly random.
"I gotta believe... that the PC port will work." (Spoiler: It rarely does.) parappa the rapper pc
And yet, it is utterly fascinating.