У вашего броузера проблема в совместимости с HTML5
We discuss how we make cen64 fast without compromising on accuracy. See also: https://www.youtube.com/watch?v=HwEdqAb2l50
This presentation was featured at Midwest Gaming Classic 2017. Slides are available: http://n64dev.org/building_cen64.pdf
Major thanks to Jason C. Gares of Video Workbench Productions for providing the audio and queueRAM for chasing it down.