Mario Kart 64 Audio Drift (N64)

User reports audio drift (clean delay) specifically in Mario Kart 64 (US) on N64. The issue occurs after a few minutes of play. Other games like Super Smash Bros work fine. System: Windows, Chrome, 60Hz monitor. Steps tried: Hard refresh, disabling auto-save, disabling shaders, ensuring 60Hz refresh rate. The audio falls behind the video without crackling.